1 Institute for Nuclear Research of the Russian Academy of Sciences, 60th Anniversary of October Revolution Prospect 7a, Moscow VI-117312, Russian Federation 33 2 Gosudarstvennyi Komitet po Ispol'zovanii Atomnoi Energii, Institut Teoreticheskoi i Eksperimental'noi Fiziki, Moscow, USSR 12 3 Akademiia Nauk SSSR, Institut Kosmicheskikh Issledovanii and Sovet po Mezhdunarodnomu Sotrudnichestvu v Oblasti Issledovaniia i Ispol'zovaniia Kosmicheskogo Prostranstva Interkosmos, Moscow, USSR 72 4 Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Epping, New South Wales, Australia 39 5 Commonwealth Scientific and Industrial Research Organization, National Measurement Laboratory, Sydney, Australia 238 6 Commonwealth Scientific and Industrial Research Organization, Div. of Radiophysics, Sydney, Australia 328 7 Defence Science and Technology Organisation, Surveillance Research Laboratory, Salisbury, Australia 21 8 Commonwealth Scientific and Industrial Research Organization, National Measurement Laboratory, Sydney, Australia 28 9 Institut fur Planetologie, Universitat Munster, Wilhelm-Klemm-Str. 10, 48149 Munster GERMANY 9 10 Akademiia Nauk Ukrainskoi SSR, Institut Geofiziki, Kiev, Ukrainian SSR 11 11 Science and Engineering Research Council, Rutherford Appleton Laboratory, Didcot, Oxon, England 20 12 Chinese Academy of Sciences, Center for Space Science and Applied Research, Beijing, China 11 13 Laboratory for Space Research, Utrecht, Netherlands 117 14 Institute of Cosmo-Geophysics, CNR, Torino, and INFN-Torino, University ofTorino,, Italy 59 15 CNR, Istituto di Fisica Cosmica ed Applicazioni dell'Informatica, Palermo, Italy 8 16 Chinese Academy of Sciences, Research Center for Astronomical Instruments, Nanjing, China 98 17 National Aeronautics and Space Administration. Goddard Space Flight Center, Greenbelt, MD. 9 18 NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt 469 19 NASA, Goddard Space Flight Center, Laboratory for Extraterrestrial Physics, Greenbelt, Md. 123 20 CNR, Laboratorio di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy 36 21 CNRS, Laboratoire de Physique Stellaire et Planetaire, Verrieres-le-Buisson, Essonne, France 72 22 NASA, Goddard Space Flight Center, Laboratory for Planetary Atmospheres, Greenbelt, MD 132 23 B'lgarska Akademiia na Naukite, Tsentralna Laboratoriia za Kosmicheski Izsledvaniia, Sofia, Bulgaria 10 24 NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, Md. 271 25 National Research Council of Canada, Herzberg Institute of Astrophysics, Ottawa, Canada 86 26 Consejo Superior de Investigaciones Cientificas, Instituto de Astrofisica de Canarias, La Laguna, Spain 24 27 NASA, Goddard Space Flight Center, Laboratory for Solar Physics and Astrophysics, Greenbelt, Md. 33 28 California Institute of Technology, Jet Propulsion Laboratory, Space Sciences Div., Pasadena, Calif. 34 29 Smithsonian Astrophysical Observatory and Harvard College Observatory, Cambridge, Mass. 29 30 NASA, Ames Research Center, Theoretical and Planetary Studies Branch, Moffett Field, Calif. 9 31 NASA, Marshall Space Flight Center, Space Sciences Laboratory, Huntsville 77 32 Harvard College Observatory and Smithsonian Astrophysical Observatory, Center for Astrophysics, Cambridge, Mass. 21 33 Harvard College Observatory and Smithsonian Astrophysical Observatory, Cambridge, Mass. 104 34 South African Astronomical Observatory, Observatory, Republic of South Africa 30 35 Hartebeesthoek Radio Astronomy Observatory, Krugersdorp, South Africa 9 36 Mullard Radio Astronomy Observatory, Cambridge, England 49 37 Royal Greenwich Observatory, Herstmonceux, Sussex, England 59 38 Smithsonian Astrophysical Observatory, Cambridge, MA 257 39 Five College Radio Astronomy Observatory, Amherst, MA 53 40 Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 1950 41 Joint Institute for Laboratory Astrophysics, Boulder, CO 513 42 Space Research Astronomical Observatory, Utrecht, Netherlands 20 43 Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, US 30 44 Vsesoiuznyi Nauchno-Issledovatel'skii Institut Fiziko-Tekhnicheskikh i Radiotekhnicheskikh Izmerenii, Khabarovsk, USSR 60 45 Akademie der Wissenschaften der DDR, Zentralinstitut fuer Astrophysik, Potsdam, German Democratic Republic 24 46 Deutsche Akademie der Wissenschaften, Zentralinstitut fuer Astrophysik, Potsdam, East Germany 32 47 Oesterreichische Akademie der Wissenschaften, Institut fuer Weltraumforschung, Graz, Austria 22 48 Deutsche Akademie der Wissenschaften, Zentralinstitut fuer Astrophysik, Potsdam, East Germany 106 49 Centre d'Etudes et de Recherches Geodynamiques et Astronomiques, Grasse, Alpes-Maritimes, France 61 50 Akademiia Nauk SSSR, Institut Geokhimii i Analiticheskoi Khimii, Moscow, USSR 68 51 AN SSSR, Institut Geokhimii i Analiticheskoi Khimii, Moscow, USSR 95 52 Akademiia Nauk SSSR, Institut Fiziki Zemli, Moscow, USSR 136 53 Akademiia Nauk SSSR, Institut Teoreticheskoi Astronomii, Leningrad, USSR 38 54 Akademiia Nauk Kazakhskoi SSR, Astrofizicheskii Institut, Alma-Ata, Kazakh SSR 340 55 Akademiia Nauk SSSR, Institut Kosmicheskikh Issledovanii 25 56 Akademiia Nauk Tadzhikskoi SSR, Institut Astrofiziki, Dushanbe, Tadzhik SSR 58 57 Akademiia Nauk SSSR, Fizicheskii Institut, Moscow, USSR 218 58 Akademiia Nauk Litovskoi SSR, Institut Fiziki i Matematiki, Vilnius, Lithuanian SSR 17 59 Akademiia Nauk SSSR, Fiziko-Tekhnicheskii Institut, Leningrad, USSR 291 60 Akademiia Nauk Ukrainskoi SSR, Institut Teoreticheskoi Fiziki, Kiev, Ukrainian SSR 74 61 Akademiia Nauk SSSR, Institut Prikladnoi Fiziki, Gorki, USSR 29 62 Rossiiskaia Akademiia Nauk, Institut Kosmicheskikh Issledovanii, Moscow, Russia 329 63 AN SSSR, Institut Kosmicheskikh Issledovanii, Moscow, USSR 1654 64 Akademiia Nauk SSSR, Institut Kosmicheskikh Issledovanii, Moscow, USSR 487 65 Akademiia Nauk SSSR, Institut Prikladnoi Matematiki, Moscow, USSR 3699 66 AN SSSR, Institut Iadernykh Issledovanii, Moscow, USSR 93 67 Akademiia Nauk SSSR, Astronomicheskii Sovet, Moscow, USSR 13 68 AN SSSR, Institut Prikladnoi Matematiki, Moscow, USSR 30 69 Akademiia Nauk SSSR, Sibirskii Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Irkutsk, USSR 13 70 B'lgarska Akademiia na Naukite, Samostoiatelna Sektsiia po Astronomiia s Natsionalna Astronomicheska Observatoriia, Sofia, Bulgaria 106 71 Vsesoiuznyi Nauchno-Issledovatel'skii Geologicheskii Institut, Leningrad, USSR 21 72 Nauchno-Issledovatel'skii Radiofizicheskii Institut, Gorki, USSR 32 73 Landessternwarte Koenigstuhl, Heidelberg, Federal Republic of Germany 39 74 Bonn, Universitaet, Federal Republic of Germany 338 75 Changsha Institute of Technology, People's Republic of China 8 76 Purple Mountain Observatory, Nanjing, People's Republic of China 14 77 Nanjing University, Nanjing, People's Republic of China 20 78 Moskovskii Gosudarstvennyi Universitet, Krymskaia Stantsiya, Ukrainian SSR 18 79 Moskovskii Gosudarstvennyi Universitet, Moscow, USSR 121 80 Pskorskii Gosudarstvennyi Pedagogicheskii Institut, Pskov, USSR 10 81 Beijing Normal University, Beijing, People's Republic of China 163 82 Chinese Academy of Sciences, Beijing, China 32 83 Chinese Academy of Sciences, Institute of Mechanics, Beijing, People's Republic of China 21 84 China University of Science and Technology, Hefei, People's Republic of China 21 85 AN ESSR, Institut Astrofiziki i Fiziki Atmosfery, Toravere, Estonian SSR 13 86 Observatoire Astronomique du Mont Megantic, Montreal, Canada 10 87 Osservatorio Astronomico di Capodimonte, Naples, Italy 11 88 AN SSSR, Institut Geokhimii i Analiticheskoi Khimii, Moscow, USSR 87 89 AN TSSR, Institut Astrofiziki, Dushanbe, Tadzhik SSR 67 90 AN SSSR, Institut Prikladnoi Matematiki, Moscow, USSR 44 91 AN USSR, Institut Radiofiziki i Elektroniki, Kharkov, Ukrainian SSR 12 92 Observatoire de la Cote d'Azur, Nice, France 11 93 Moskovskii Gosudarstvennyi Universitet, Moscow, USSR 1688 94 Ob'edinennyi Institut Iadernykh Issledovanii, Dubna, USSR 12 95 Obserwatorium Astronomiczne, Krakow, Poland 17 96 Los Alamos National Laboratory, NM 15 97 Leningradskii Gosudarstvennyi Universitet, Leningrad, USSR 47 98 Space Telescope Science Inst., Baltimore, MD, US 47 99 AN USSR, Radioastronomicheskii Institut, Kharkov, Ukrainian SSR 94 100 AN SSSR, Astronomicheskii Sovet, Moscow, USSR 55 101 AN SSSR, Fizicheskii Institut, Moscow, USSR 264 102 Moskovskii Inzhenerno-Fizicheskii Institut, Moscow, USSR 43 103 Institut Teoreticheskoi i Eksperimental'noi Fiziki, Moscow, USSR 27 104 Leningradskii Gornyi Institut, Leningrad, USSR 42 105 Besanson, Observatoire Astronomique, France 13 106 Spetsial'naia Astrofizicheskaia Observatoriia, Nizhni Arkhyz, USSR 173 107 AN SSSR, Fizicheskii Institut, Moscow, USSR 46 108 AN SSSR, Fiziko-Tekhnicheskii Institut, Leningrad, USSR 74 109 Tadzhikskii Gosudarstvennyi Universitet, Dushanbe, Tadzhik SSR 213 110 AN SSSR, Fiziko-Tekhnicheskii Institut, Leningrad, USSR 67 111 Leningradskii Politekhnicheskii Institut, Leningrad, USSR 56 112 Garniiskaia Laboratoriia Kosmicheskoi Astronomii, Yerevan, Armenian SSR 8 113 Glavnaia Astronomicheskaia Observatoriia, Kiev, Ukrainian SSR 635 114 Astronomicheskaia Observatoriia, Kiev, Ukrainian SSR 220 115 Glavnaia Astronomicheskaia Observatoriia, Pulkovo, USSR 331 116 Belorusskii Gosudarstvennyi Universitet, Minsk, Belorussian SSR 16 117 Deutsche Forschungs- und Versuchsanstalt fuer Luft- und Raumfahrt, Wessling, West Germany 626 118 National Research Council, Herzberg Institute of Astrophysics, Ottawa, Canada 69 119 Rossiiskaia Akademiia Nauk, Institut Astronomii, Moscow, Russia 9 120 Zuerich, Eidgenoessische Technische Hochschule, Zurich, Switzerland 120 121 Ceskoslovenska Akademie Ved, Astronomicky Ustav, Ondrejov, Czechoslovakia 61 122 Deutsche Akademie der Wissenschaften, Sternwarte, Babelsberg and Sonnenberg, East Germany 72 123 Dipartimento di Fisica dell' Universita' di Milano, and Sezione di Milano dell' INFN, Milano, I-20133, Italy 20 124 Chinese Academy of Sciences, Institute of High Energy Physics, Beijing, People's Republic of China 174 125 Chinese Academy of Sciences, Mechanics Institute, Beijing, People's Republic of China 58 126 University of Science and Technology of China, Hefei, People's Republic of China 36 127 Chinese Academy of Sciences, Beijing, People's Republic of China 144 128 Universitaets-Sternwarte, Goettingen, Federal Republic of Germany 34 129 Dipartimento di Fisica dell'Universita di Lecce and INFN, Lecce, 73100, Italy 159 130 Dipartimento di Fisica, Universita di Roma ``La Sapienza'' and INFN, sez. Roma,I-00185 Rome,, Italy 48 131 Space Telescope European Coordinating Facility, Garching, Federal Republic of Germany 64 132 Dept. of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 BEQ ENGLAND 134 133 Lab. de Astrofisica Espacial y Fisica Fundamental, Madrid 834 134 Haute-Provence, Observatoire, Saint-Michel l'Observatoire, Alpes-de-Haute-Provence, France 19 135 Department of Physics, SUNY at Plattsburgh, Hudson Hall, Plattsburgh, NY 12901 10 136 Academy of Sciences of the Czech Republic, Ondrejov, Czech Republic 14 137 University of Manchester Institute of Science and Technology, Manchester, England 176 138 University of Manchester Institute of Science and Technology, Manchester, England 26 139 NASA, Ames Research Center, Theoretical and Planetary Studies Branch, Moffett Field, CA 27 140 Deutsche Akademie der Wissenschaften, Sternwarte, Babelsberg, East Germany 16 141 Moskovskii Gosudarstvennyi Universitet 23 142 Joint Inst. for Lab. Astrophysics, Boulder, CO 20 143 Brestskii Gosudarstvennyi Pedagogicheskii Institut, Brest, Belorussian SSR 13 144 Gosudarstvennyi Astronomicheskij Inst., Moscow, Russia 39 145 Universitetets Astronomiske Observatorium, Copenhagen, Denmark 40 146 Biurakanskaia Astrofizicheskaia Observatoriia, Yerevan, Armenian SSR 199 147 California Inst. of Technology, Pasadena, CA, US 34 148 Georgia Institute of Technology, Atlanta, Ga. 1511 149 California Inst. of Tech., Pasadena, CA, US 257 150 Leningradskii Gosudarstvennyi Universitet, Leningrad, USSR 82 151 California Institute of Technology, Jet Propulsion Laboratory, Pasadena, CA 1637 152 Cooperative Institute for Research in Environmental Sciences, Boulder, CO 13 153 NASA, Ames Research Center, Space Science Div., Moffett Field, CA 71 154 California Institute of Technology, Pasadena, Calif. 39 155 Polska Akademia Nauk, Centrum Badan Kosmicznych, Warsaw, Poland 24 156 Polska Akademia Nauk, Centrum Astronomiczne, Warsaw, Poland 137 157 Natsionalna Astronomicheska Observatoriia, Sofia, Bulgaria 26 158 Los Alamos National Laboratory, Los Alamos, NM 15 159 Mount Wilson and Las Campanas Observatories, Pasadena, CA 17 160 Uttar Pradesh State Observatory, Nainital, India 8 161 Slovenska Akademia Vied, Astronomicky Ustav, Tatranska Lomnica, Czechoslovakia 10 162 B'lgarska Akademiia na Naukite, Samostoiatelna Sektsiia Astronomiia 21 163 Polska Akademia Nauk, Centrum Badan Kosmicznych, Wroclaw, Poland 19 164 CNRS, Laboratoire de Physique Stellaire et Planetaire, Verrieres-le-Buisson, France 26 165 CNRS, Laboratoire de Physique et Chimie de l'Environnement, Orleans, France 14 166 Commissariat al'Energie Atomique, Service d'Astrophysique, Gif-sur-Yvette, Essonne, France 33 167 Commissariat a l'Energie Atomique, Centre d'Etudes de Limeil, Villeneuve-Saint-Georges, Val-de-Marne 116 168 Commissariat a l'Energie Atomique, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, Essonne, France 116 169 Commissariat a l'Energie Atomique, Service d'Electronique Physique, Gif-sur-Yvette, Essonne, France 11 170 Max-Planck-Inst. fuer Extraterrestrische Physik, Garching, Germany 93 171 Bordeaux, Universite, Observatoire, Floirac, Gironde, France 9 172 Universidad Nacional Autonoma de Mexico, Alvaro Obregon, Mexico 30 173 Astronomisches Rechen-Institut, Heidelberg, West Germany 28 174 Zuerich, Eidgenoessische Technische Hochschule, Zurich, Switzerland 21 175 Nordisk Institut for Teoretisk Atomfysik, Copenhagen, Denmark 21 176 CNR, Ist. di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna 12 177 Max Planck Institut fuer Aeronomie, Katlenburg-Lindau, Germany 604 178 Scuola Internazionale Superiore di Studi Avanzati, Trieste, Italy 19 179 CNR, Istituto di Fisica dello Spazio Interplanetario, Frascati, Italy 16 180 Pic-du-Midi et Toulouse, Observatoires, Bagneres-de Bigorre, Hautes-Pyrenees, France 20 181 Pic-du-Midi, Observatoire, Bagneres-de-Bigorre, Hautes-Pyrenees, France 18 182 Astronomisches Rechen-Institut, Heidelberg, Federal Republic of Germany 19 183 CNRS, Laboratoire de Glaciologie et de Geophysique de l'Environnement, Saint-Martin-d'Heres, France 8 184 Cooperative Institute for Research in Environmental Sciences, Boulder, CO 19 185 Universitetets Astronomiske Observatorium, Tollose, Denmark 20 186 Institute for Advanced Study, Princeton, NJ 114 187 Max-Planck-Institut fuer Radioastronomie, Bonn, West Germany 71 188 Institut d'Aeronomie Spatiale de Belgique, Brussels, Belgium 158 189 CEA, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, France 12 190 CNR, Ist. di Fisica Cosmica con Applicazioni all'Informatica, Palermo, Italy 31 191 Instituto de Astrofisica de Canarias, La Laguna, Spain 112 192 Australia Telescope National Facility, Epping 14 193 International Centre for Theoretical Physics, Trieste, Italy 19 194 CNR, Istituto di Astrofisica Spaziale, Frascati, Italy 495 195 CNR, Laboratorio di Fisica Cosmica e Tecnologie Relative, Milan, Italy 86 196 Institut de Radio Astronomie Millimetrique, Saint-Martin-d'Heres, France 55 197 Institute of Physical and Chemical Research, Saitama, Japan 8 198 Inst. de Astrofisica de Canarias, Tenerife, Spain 143 199 CNRS, Institut d'Astrophysique, Paris, France 452 200 Inst. de Astrofisica de Canarias, Tenerife, Spain 382 201 Observatorie du Pic-du-Midi, Bagneres de Biddorr, France 304 202 CNRS, Laboratoire d'Astronomie Spatiale, Marseille, France 59 203 CNR, Istituto di Fisica Cosmica, Milan, Italy 59 204 Institut de Radio Astronomie Millimetrique, Grenoble, France 10 205 Institut d'Astrophysique Spatiale, Orsay, France 335 206 CEA, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, France 82 207 Centre d'Etude Spatiale des Rayonnements, Toulouse, France 163 208 CNRS, Service d'Aeronomie, Verrieres-le-Buisson, Essonne, France 109 209 Observatorio Interamericano de Cerro Tololo, La Serena, Chile 301 210 NASA, Goddard Institute for Space Studies, New York, N.Y. 33 211 Brera, Osservatorio Astronomico, Italy 354 212 Meudon, Observatoire, Meudon, Hauts-de-Seine, France 53 213 CNR, Laboratorio per il Plasma nello Spazio, Frascati, Italy 11 214 Paris, Universite, Institut Henri Poincare, Paris, France 11 215 Carnegie Institute of Washington, Washingotn, DC, US 92 216 Lawrence Livermore National Laboratory, Livermore, CA 110 217 CNR, Istituto di Radioastronomia, Bologna, Italy 31 218 Institute for Advanced Study, Princeton, N.J. 56 219 U.S. Navy, E. O. Hulburt Center for Space Research, Washington, DC 46 220 Akademiia Nauk SSSR, Astronomicheskii Sovet, Moscow, USSR 59 221 National Center for Atmospheric Research, Boulder, Colo. 8 222 Virginia Polytechnic Institute and State University, Blacksburg, VA 135 223 Moskovskii Institut Elektronnogo Mashinostroeniia, Moscow, USSR 12 224 Abastumanskaia Astrofizicheskaia Observatoriia, Mount Kanobili, Georgian SSR 26 225 Universitaets-Sternwarte, Goettingen, West Germany 174 226 Magyar Tudomanyos Akademia, Kozponti Fizikai Kutato Intezet, Budapest, Hungary 18 227 Imperial College of Science and Technology, London, England 127 228 Space Telescope Science Institute, Baltimore, MD 12 229 Lockheed Solar and Astrophysics Laboratory, Palo Alto, US 13 230 National Optical Astronomy Observatories, Tucson, AZ 185 231 Nuffield Radio Astronomy Laboratories, Jodrell Bank, England 18 232 Princeton Univ. Observatory, Princeton, NJ, US 48 233 National Radio Astronomy Observatory, Socorro, NM 129 234 National Radio Astronomy Observatory, Charlottesville, VA 124 235 Science Research Council, Appleton Laboratory, Abingdon, Oxon, England 9 236 U.S. Navy, E. O. Hulburt Center for Space Research, Washington, DC 2949 237 Nordisk Institut for Teoretisk Atomfysik, Copenhagen, Denmark 33 238 ESA, European Space Research and Technology Centre, Noordwijk, Netherlands 23 239 Istituto Nazionale di Fisica Nucleare, Turin, Italy 339 240 International Ultraviolet Explorer Observatory, Madrid, Spain 889 241 International Centre for Theoretical Physics, Trieste, Italy 10 242 Scuola Internazionale Superiore di Studi Avanzati, Trieste, Italy 19 243 NASA. Goddard Space Flight Center, Greenbelt, MD, US 520 244 Institute for Space and Terrestrial Science, Concord, Canada 37 245 Imperial College of Science and Technology, London, England 13 246 Helsinki, University, Observatory, Helsinki, Finland 14 247 CEA, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, France 18 248 Nauchno-Issledovatel'skii Radiofizicheskii Institut, Gorki, USSR 432 249 National Astronomical Observatory, Minamisaku, Japan 709 250 Nuffield Radio Astronomy Labs., Manchester Univ., Manchester, UK 47 251 Anglo-Australian Observatory, Epping, New South Wales, Australia 89 252 Beijing Observatory, People's Republic of China 265 253 Purple Mountain Observatory, Nanking, Communist China 596 254 Dominion Astrophysical Observatory, Victoria, British Columbia, Canada 178 255 South African Astronomical Observatory, Observatory, Republic of South Africa 160 256 Haute-Provence, Observatoire, Saint-Michel l'Observatoire, France 309 257 Crimean Astrophysical Observatory, Nauchny, Crimea, 334413, Ukraine 11 258 European Southern Observatory, Garching, West Germany 277 259 Chinese Academy of Sciences, Beijing, China 14 260 Russian Academy of Sciences, Moscow, Russia 164 261 Beijing Astronomical Observatory, People's Republic of China 32 262 Bophuthatswana, University, Taung, Republic of South Africa 69 263 Amsterdam, Universiteit, Amsterdam, Netherlands 37 264 Pennsylvania, University, Philadelphia, Pa. 29 265 U.S. Geological Survey, Astrogeology Center, Flagstaff, Ariz. 8 266 Space Research Institute, Moscow, Russia 106 267 Louisiana State University Observatory, Baton Rouge, LA 10 268 Iowa State University of Science and Technology, Ames 19 269 Astronomical Observatory, Nanjing, People's Republic of China 418 270 Geological Survey of Papua New Guinea, Port Moresby, New Guinea 133 271 Alabama, University, University, Ala. 45 272 Tata Institute of Fundamental Research, Bombay, India 68 273 Universitetets Astronomiske Observatorium, Copenhagen, Denmark 50 274 TRW Defense and Space Systems Group, Redondo Beach, Calif. 21 275 Lockheed Research Laboratories, Palo Alto, Calif. 19 276 Moskovskii Gosudarstvennyi Universitet, Moscow, Russia 16 277 Indian Institute of Astrophysics, Bangalore, India 20 278 Royal Greenwich Observatory, Herstmonceux, Sussex, England 38 279 Mullard Radio Astronomy Observatory, Cambridge, England 9 280 RAN, Inst. Kosmicheskikh Issledovanii, Moscow, Russia 2398 281 Carnegie Institution of Washington, Observatories, Pasadena, CA 414 282 Tokyo Institute of Technology, Tokyo, Japan 38 283 CNR, Laboratorio di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy 11 284 Joint Institute for Laboratory Astrophysics, Boulder, CO 92 285 CONICET, Instituto de Astronomia y Fisica del Espacio, Buenos Aires, Argentina 39 286 Inst. of Planetology, Univ. of Munster, Wilhelm-Klemm-Str. 10, 48149 Munster GERMANY 11 287 NASA, Ames Research Center, Theoretical Studies Branch, Moffett Field, CA 9 288 NASA, Marshall Space Flight Center, Huntsville, AL 174 289 Potchefstroom University for Christian Higher Education, Republic of South Africa 31 290 Bureau des Longitudes, Service de Mecanique Celeste, Paris, France 22 291 Instituto de Pesquisas Espaciais, Sao Jose dos Campos, Brazil 118 292 Istituto Astrofisica Spaziale, Frascati, Italy 9 293 CNR, Istituto di Radioastronomia, Bologna, Italy 27 294 Inst. de Radioastronomie Millimetrique, Saint-Martin-d'Heres, France 14 295 Observatorio Interamericano de Cerro Tololo, La Serena, Chile 281 296 Max-Planck-Inst. fuer Aeronomie, Katlenburg-Lindau, Germany 10 297 Technion - Israel Institute of Technology, Haifa, Israel 43 298 Spetsial'naia Astrofizicheskaia Observatoriia, Zelenchukskaya, USSR 8 299 Max-Planck-Institut fuer extraterrestrische Physik, Garching, West Germany 76 300 Zuerich, Eidgenoessische Technische Hochschule, Zurich, Switzerland 25 301 CNRS, Institut d'Astrophysique Spatiale, Verrieres-le-Buisson, France 10 302 Canadian Institute for Theoretical Astrophysics, Toronto, Canada 177 303 Indian Institute of Astrophysics, Bangalore, India 71 304 Ministerio de Educacion de Chile, Instituto Isaac Newton, Santiago 1118 305 Andalucia, Instituto de Astrofisica, Granada, Spain 33 306 Instituto de Astrofisica de Canarias, La Laguna, Spain 15 307 Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil 24 308 CNR, Istituto di Studio e Tecnologie sulle Radiazioni Extraterrestri, Bologna, Italy 13 309 Ministerio de Educacion de Chile, Instituto Isaac Newton, Santiago 84 310 ESA, Space Telescope European Coordinating Facility, Garching, West Germany 10 311 CNR, Istituto di Fisica dello Spazio Interplanetario, Frascati, Italy 28 312 New York, State University, Stony Brook, N.Y. 381 313 Old Dominion University, Norfolk, VA 147 314 Durham University, Durham, England 280 315 Steward Observatory, Tucson, Ariz. 42 316 Lausanne Univ., Chavannes-des-Bois, Switzerland 95 317 Maryland, University, College Park, Md. 9 318 Royal Greenwich Observatory, Hailsham, England 253 319 Univ. de Montreal, Montreal, Quebec, Canada 13 320 NASA, Ames Research Center, Moffett Field, CA 1478 321 Centre d'Etudes de Saclay, Gif-sur-Yvette, France 668 322 Hamburger Sternwarte, Hamburg, West Germany 28 323 Strasbourg, Observatoire, France 17 324 Observatoire Midi-Pyrenees, Toulouse, France 49 325 London, University College, Dorking, Surrey, England 125 326 Heidelberg, Universitaet, Heidelberg, West Germany 24 327 Basel, Universitaet, Binningen, Switzerland 30 328 Lund University, Observatory, Sweden 214 329 Alberta, University, Edmonton, Canada 129 330 Paris VII, Universite, Paris, France 56 331 Belfast, Queen's University, Northern Ireland 39 332 Bochum, Ruhr-Universitaet, West Germany 41 333 Universidad de Puerto Rico, Rio Piedras 348 334 Geneve, Observatoire, Sauverny, Switzerland 24 335 Smithsonian Institution, Washington, DC 946 336 Universitaets-Sternwarte, Goettingen, West Germany 370 337 NASA, Johnson Space Center, Houston, Tex. 75 338 ESA, Space Science Dept., Noordwijk, Netherlands 25 339 Harvard-Smithsonian Center for Astrophysics 64 340 Darmstadt, Technische Hochschule Darmstadt, West Germany 8 341 Max-Planck-Inst. fuer Kernphysik, Heidelberg, Germany 9 342 Glasgow, University, Glasgow, Scotland 1259 343 Madrid, Universidad Complutense, Spain 9 344 Groningen, Rijksuniversiteit, Groningen, Netherlands 17 345 Milano, Universita, Milan, Italy 290 346 Leicester, University, Leicester, England 102 347 Geneve, Observatoire, Sauverny, Switzerland 18 348 Mainz, Universitaet, West Germany 989 349 Open University, Milton Keynes, England 63 350 California Institute of Technology, Pasadena 36 351 British Columbia, University, Vancouver, Canada 78 352 California, University, Los Angeles, CA 127 353 Heidelberg, Universitaet, Federal Republic of Germany 220 354 Moskovskii Gosudarstvennyi Universitet, Moscow 10 355 Goettingen, Universitaet, Sternwarte, Goettingen, West Germany 18 356 Max-Planck-Institut fuer Radioastronomie, Bonn, Germany 370 357 Max-Planck-Inst. fuer Radioastronomie, Bonn, Germany 65 358 Max-Planck-Institut fuer Chemie, Mainz, Germany 89 359 University of California, Berkeley, CA, US 67 360 Astronomisches Rechen-Inst., Heidelberg, Germany 26 361 Observatorium Hoher List, Daun, West Germany 18 362 Hamburger Sternwarte, Hamburg, West Germany 16 363 Universitaets-Sternwarte, Goettingen, West Germany 23 364 Inst. fuer Planetologie, Muenster, Germany 12 365 Dipartimento di Astronomia, Bologna, Italy 14 366 Berlin, Technische Universitaet, Berlin, West Germany 64 367 Wuppertal, Universitaet-Gesamthochschule, Wuppertal, West Germany 8 368 Max-Planck-Inst. fuer Physik und Astrophysik, Garching, Germany 60 369 Landessternwarte Koenigstuhl, Heidelberg, Germany 32 370 Kiepenheuer-Inst. fuer Sonnenphysik, Freiburg, Germany 23 371 CNRS, Institut d'Astrophysique, Paris, France 116 372 Max-Planck-Institut fuer Astronomie, Heidelberg, West Germany 53 373 Observatorium Hoher List, Daun, West Germany 36 374 NASA, Washington, DC 548 375 Athens Univ., Greece 19 376 Univ. of Wales, Cardiff, UK 109 377 Univ. di Padova, Padova, Italy 13 378 Computer Sciences Corp., Greenbelt, MD 55 379 Nice, Observatoire, France 18 380 Nagoya Univ., Japan 410 381 NASA, Goddard Space Flight Center 47 382 ESO, Garching, Germany 11712 383 Lick Observatory 136 384 ESTEC, Noordwijk, Netherlands 18 385 Remeis-Sternwarte, Bamberg, West Germany 8 386 Nanjing University, People's Republic of China 251 387 Kashima Space Research Center, Japan 92 388 Univ. Kiel, Kiel, Germany 48 389 Kyushu Univ., Fukuoka, Japan 152 390 Carnegie Institution of Washington, Washington, DC 140 391 Montana State University, Bozeman, Montana, US 861 392 Padova, Universita 645 393 Hawaii, University, Honolulu 168 394 USAF, Geophysics Laboratory, Bedford, MA 4257 395 Padua Univ., Italy 8949 396 MIT, Cambridge, MA 871 397 California, University, La Jolla, CA 230 398 Johns Hopkins Univ., Baltimore, MD, US 104 399 Roma I, Universita, Rome, Italy 1065 400 New York, State University, Stony Brook, NY 361 401 California, University, Davis 195 402 Banaras Hindu University, Varanasi, India 987 403 Dayton, University, Dayton, OH 970 404 Catholic University of America, Washington, DC 28 405 Louisiana State University, Baton Rouge, La. 18 406 Big Bear Solar Observatory 99 407 Columbia University, New York, NY 54 408 Paris, Observatoire, Meudon, France 13 409 Dudley Observatory, Albany 343 410 Roorkee Univ., India 104 411 Los Alamos National Laboratory, NM 57 412 Univ. of Calgary, Alberta, Canada 10 413 NASA, Johnson Space Center, Houston, TX 76 414 Arizona State Univ., Phoenix, AZ, US 50 415 Princeton University, New Observatory, Princeton, NJ 611 416 Amsterdam, Universiteit, Amsterdam, Netherlands 561 417 Bonn, Universitaet, Bonn, West Germany 89 418 Leiden, Rijksuniversiteit, Sterrewacht, Netherlands 469 419 Muenster, Universtaet, West Germany 62 420 Institute for Advanced Study, Princeton, NJ 29 421 ESA, Space Science Dept., Noordwijk, Netherlands 54 422 Univ. of California, Berkeley, CA, US 4453 423 ESO, Garching, Germany 11 424 Toronto, University, Toronto, Canada 2654 425 Landessternwarte, Heidelberg, Germany 164 426 Applied Research Corp., Landover, MD 26 427 Texas, University, Austin 23694 428 Tokyo, University, Tokyo, Japan 1197 429 San Jose State University, CA 70 430 Milano, Univ., Milan, Italy 166 431 Queen Mary College, London, England 28 432 Durham, University, Durham, England 530 433 Univ. of Arizona, Tucson, AZ, US 404 434 Kansas, University, Lawrence 3418 435 Iowa, University, Iowa City, IA 527 436 Brown University, Providence, RI, US 2250 437 California, University, La Jolla, Calif. 26 438 AT&T Bell Laboratories, Holmdel, NJ 45 439 Univ. of Hawaii at Manoa, Honolulu 16 440 New Mexico State University, Las Cruces, N. Mex. 12 441 Athens, University, Athens, Greece 34 442 Firenze, Universita, Florence, Italy 12 443 Amsterdam, Universiteit, Netherlands 35 444 Shemakhinskaia Astrofizicheskaia Observatoriia, Shemakha, Azerbaidzhan SSR 26 445 Radioastrofizicheskaia Observatoriia, Riga, Latvian SSR 59 446 Massachusetts Institute of Technology, Cambridge, MA, US 542 447 Mount Wilson and Las Campanas Observatories, Pasadena, CA 269 448 Atmospheric and Environmental Research, Inc., Cambridge, MA 16 449 Crimean Astrophysical Observatory, P.O. Box Nauchny Observatory, Nauchny, Crimea, Ukraine 1464 450 Space Research Astronomical Observatory, Utrecht, Netherlands 30 451 Mt. Stromlo and Siding Spring Observatories, Canberra, Australia 1613 452 Athens, Academy, Research Center for Astronomy and Applied Mathematics, Greece 27 453 Science and Engineering Research Council, Rutherford Appleton Laboratory, Didcot, Oxon, England 14 454 National Research Council, Herzberg Institute of Astrophysics, Ottawa, Canada 13 455 South African Astronomical Observatory, Observatory, Republic of South Africa 152 456 Eidgenoessische Technische Hochschule, Zurich, Switzerland 27 457 CEA, Service d'Astrophysique, Gif-sur-Yvette, France 115 458 Centre d'Etudes de Saclay, Gif-sur-Yvette, France 10 459 CEA, Service de Physique Theorique, Gif-sur-Yvette, France 13 460 Australian Defence Force Academy, Canberra, Australia 17 461 ESA, Astronomy Div., Madrid, Spain 20 462 ESA, Astrophysics Div., Noordwijk, Netherlands 9 463 Five College Radio Astronomy Observatory, Amherst, MA 12 464 Los Alamos National Laboratory, Los Alamos, NM, US 171 465 Osservatorio Astronomico di Brera, Merate, Italy 310 466 Astronomicheskaia Observatoriia, Kazan, Russia 438 467 Lockheed Space Sciences Laboratory, Palo Alto, CA 72 468 Osservatorio Astronomico di Brera, Milan, Italy 1319 469 Physical Research Laboratory, Ahmedabad, India 64 470 Cambridge University Institute of Astronomy, England 208 471 Calgary Univ., Calgary, Alberta, Canada 3841 472 Osservatorio Astronomico, Rome, Italy 551 473 California Inst. of Technology, Pasadena 51 474 The Ohio State University, Columbus, OH, US 55 475 British Columbia, University, Vancouver, Canada 8 476 Utrecht, Rijksuniversiteit, Utrecht, Netherlands 32 477 Dansk Rumforskningsinstitut, Lyngby, Denmark 470 478 Inst. of Astronomy, Cambridge, UK 210 479 ESO, Garching, Germany 24 480 Meteorological Research Institute, Tsukuba, Japan 239 481 Rensselaer Polytechnic Institute, Troy, NY 61 482 Centro Astronomico de Yebes, Guadalajara, Spain 11 483 Carnegie Institution of Washington, Washington, DC 25 484 Observatoire de Bordeaux, Floirac, France 8 485 Space Research Institute, Moscow, Russia 29 486 Space Telescope Science Institute 61 487 Space Telescope Science Inst., Baltimore, MD, US 108 488 Seoul National University, Republic of Korea 10 489 Leiden, Rijksuniversiteit, Netherlands 23 490 Space Telescope Science Institute, Baltimore, MD 566 491 Univ. de Montreal, Montreal, Quebec, Canada 509 492 Eotvos Lorand Tudomanyegyetem, Budapest, Hungary 40 493 Univ. of Maryland, College Park, MD, US 105 494 Universidad Catolica de Chile, Santiago, Chile 63 495 California Institute of Technology, Pasadena, CA 172 496 Physical Research Laboratory, Ahmedabad, India 27 497 Massachusetts Inst. of Technology, Cambridge, MA, US 32 498 CNR, Laboratorio di Astrofisica Spaziale, Frascati, Italy 21 499 Centre d'Etude Spatiale des Rayonnements, Toulouse, France 8 500 Manchester, Victoria University, Manchester, England 655 501 Roma, Osservatorio Astronomico, Rome, Italy 25 502 Paris, Observatoire, Paris, France 19 503 CNRS, Institut d'Astrophysique, Paris 19 504 Paris VI, Universite, Paris, France 35 505 Purdue University, West Lafayette, Ind. 9 506 Canterbury, University, Christchurch, New Zealand 20 507 London, University College, Dorking, Surrey, England 13 508 Groningen, Rijksuniversiteit, Groningen, Netherlands 32 509 European Southern Observatory, Garching, Germany 45 510 Max-Planck-Institut fuer Astrophysik, Garching, Germany 180 511 Max-Planck-Institut fuer Kernphysik, Heidelberg, Germany 17 512 Max-Planck-Inst. fuer Extraterrestrische Physik, Garching, Germany 341 513 Kiel, Universitaet, Institut fuer Theoretische Physik und Sternwarte, Federal Republic of Germany 45 514 Max-Planck-Institut fuer Extraterrestrische Physik, Garching, Federal Republic of Germany 112 515 Max-Planck-Institut fuer Aeronomie, Katlenburg-Lindau, Federal Republic of Germany 80 516 Kiepenheuer-Institut fuer Sonnenphysik, Freiburg im Breisgau, Federal Republic of Germany 32 517 DLR, Institut fuer Raumsimulation, Cologne, Federal Republic of Germany 166 518 Max-Planck-Institut fuer Radioastronomie, Bonn, Federal Republic of Germany 838 519 Newcastle-upon-Tyne, University, Newcastle-upon-Tyne, England 15 520 Max-Planck-Institut fuer Astrophysik, Garching, Federal Republic of Germany 668 521 European Southern Observatory, Garching, Federal Republic of Germany 235 522 Max-Planck-Institut fuer Physik und Astrophysik, Garching, West Germany 846 523 Hamburger Sternwarte, Hamburg, Federal Republic of Germany 65 524 Tuebingen, Universitaet, Federal Republic of Germany 359 525 Dublin Institute for Advanced Studies, Republic of Ireland 17 526 Universitaets-Sternwarte, Goettingen, Federal Republic of Germany 312 527 Max-Planck-Institut fuer Chemie, Mainz, West Germany 134 528 Max-Planck-Institut fuer Astrophysik, Garching, West Germany 42 529 Max-Planck-Institut fuer Aeronomie, Katlenburg-Lindau, West Germany 26 530 Max-Planck-Institut fuer extraterrestrische Physik, Garching, Germany 59 531 Max-Planck-Institut fuer Physik und Astrophysik, Garching, Federal Republic of Germany 56 532 Kiel, Universitaet, Institut fuer theoretische Physik und Sternwarte, West Germany 28 533 Universitat Kiel, Institut fur Reine und Angewandte Kernphysik,24118 Kiel,, Germany 12 534 AdW der DDR, Zentralinstitut fuer Astrophysik, Potsdam, German Democratic Republic 15 535 Kiepenheuer-Institut fuer Sonnenphysik, Freiburg im Breisgau, West Germany 42 536 Kiepenheuer-Inst. fuer Sonnenphysik, Freiburg im Breisgau, Germany 36 537 New Mexico Institute of Mining and Technology, Socorro, N. Mex. 18 538 CNR, Gruppo Nazionale di Astronomia, Catania, Italy 15 539 Australian National University, Canberra, Australia 214 540 CNES, Paris, France 2826 541 Five College Radio Astronomy Observatory 21 542 Weber State College, Ogden, Utah 1836 543 Beijing Observatory, Beijing, China 16 544 Kiso Observatory, Mitaka, Japan 37 545 CNRS, Institut d'Astrophysique 22 546 CNRS 71 547 USGS, Denver, CO 412 548 RIKEN, Wako, Japan 21 549 JPL, Pasadena, CA 155 550 CNR, Istituto di Cosmo-Geofisica 125 551 RAS, Moscow, Russia 54 552 Emmanuel College, Boston, MA 169 553 Arecibo Observatory, PR 14 554 NASA, Washington, DC 148 555 IRAM, St. Martin d'Heres, France 12 556 Dominion Astrophysical Observatory, Victoria, British Columbia, Canada 37 557 Cerro Tololo Inter-American Observatory, La Serena, Chile 740 558 David Dunlap Observatory, Richmond Hill, Canada 34 559 High Altitude Observatory, Boulder, Colo. 163 560 Astronomicka Observator, Prague, Czechoslovakia 258 561 Armagh Observatory, Northern Ireland 42 562 Physical Research Laboratory, Ahmedabad, India 8 563 Lawrence Livermore National Laboratory, Livermore, CA 24 564 European Southern Observatory, Santiago, Chile 298 565 National Astronomical Observatory, Sofia, Bulgaria 9 566 Nobeyama Radio Observatory, Minamimaki, Japan 247 567 National Radio Astronomy Observatory, Tucson, AZ 46 568 Five College Radio Astronomy Observatory, Amherst, MA 84 569 Montana State Univ., Bozeman, MT, US 44 570 Grenoble, Observatoire, France 361 571 Calcutta, University, Calcutta, India 9 572 Royal Observatory, Edinburgh, United Kingdom 54 573 Steward Observatory, Tucson, AZ 504 574 Konkoly Observatory, Budapest, Hungary 72 575 Observatorio Astronomico 134 576 USAF, Geophysics Laboratory, Hanscom AFB, MA 880 577 Palomar Observatory, Pasadena, Calif. 622 578 Western Ontario, University, London, Canada 51 579 Rutherford Appleton Laboratory, Didcot, England 176 580 Geneva Observatory, Sauverny, Switzerland 80 581 National Solar Observatory, Tucson, AZ, US 2020 582 Joint Astronomy Centre, Hilo, HI 2792 583 Royal Greenwich Observatory, Herstmonceux, England 9 584 U.S. Naval Observatory, Flagstaff, AZ, US 170 585 Hughes Aircraft Company, Carlsbad, CA, US 244 586 Naval Research Laboratory, Washington, DC, US 15 587 Arecibo Observatory, Arecibo, PR 4663 588 Northeastern University, Boston, MA 232 589 ISO Observatory, Noordwijk, Netherlands 138 590 Joint Institute for Laboratory Astrophysics, Boulder, CO 13 591 Instytut Badan Jadrowych, Lodz, Poland 21 592 Indian Institute of Astrophysics, Bangalore, India 963 593 Athens, National Observatory, Greece 1167 594 Royal Greenwich Observatory, Herstmonceux, Sussex, England 8 595 Mullard Radio Astronomy Observatory, Cambridge, England 18 596 Onsala Space Observatory, Sweden 179 597 National Radio Astronomy Observatory 22 598 Indian Institute of Astrophysics, Bangalore, India 103 599 Univ. de Montreal, Quebec, Canada 17 600 NASA, Goddard Institute for Space Studies, New York, N.Y. 22 601 U.S. Navy, Naval Research Laboratory, Washington, DC 142 602 Joint Institute for Laboratory Astrophysics 95 603 Univ. of California at San Diego, La Jolla, CA, US 152 604 NASA, Goddard Space Flight Center, Greenbelt, MD 425 605 Princeton University, New Observatory, Princeton, N.J. 14 606 Smithsonian Institution, Washington, D.C. 29 607 Scarborough College, West Hill, Ontario, Canada 41 608 Stockholms Observatorium, Saltsjobaden, Sweden 73 609 Instituto de Radioastronomia Milimetrica, Granada 12 610 Tata Institute of Fundamental Research, Bombay, India 76 611 Mount Stromlo and Siding Spring Observatories, Canberra, Australia 11 612 NASA, Goddard Institute for Space Studies, New York 276 613 Observatoire Royal de Belgique, Brussels, Belgium 18 614 NASA, Goddard Space Flight Center, Greenbelt, MD 1185 615 New York State Univ., Stony Brook 661 616 Hamburger Sternwarte, Hamburg, West Germany 11 617 CEA, Service d'Astrophysique, Gif-sur-Yvette, France 19 618 CNRS, Institut d'Astrophysique, Paris, France 235 619 Cambridge Univ. Inst. of Astronomy, United Kingdom 8 620 Lunar and Planetary Institute, Tucson, AZ 58 621 Radio Astronomy Observatory, Ann Arbor, MI 1049 622 NASA, Goddard Space Flight Center, Greenbelt, MD 3840 623 Palomar Observatory, Pasadena, CA 35 624 NASA, Johnson Space Center, Houston, Tex. 17 625 ESA, Space Science Dept., Noordwijk, Netherlands 21 626 Computer Sciences Corp., Silver Spring, MD 16 627 Paris, Observatoire, Meudon, Hauts-de-Seine, France 8921 628 CEN de Saclay, Gif-sur-Yvette, France 71 629 NASA, Goddad Space Flight Center, Greenbelt 20 630 Observatoire de Paris, Meudon, France 19 631 The Australian Nat. Univ., Canberra, Australia 356 632 California Institute of Technology, Pasadena, CA, US 41 633 Univ. of Waterloo, Waterloo, Ontario, Canada 231 634 NOAA, Space Environment Laboratory, Boulder, CO 312 635 Lockheed Engineering and Science Co., Houston, TX 11 636 Observatoire du Mont Megantic, Ste.-Foy, Canada 31 637 Centro Astronomico de Yebes, Guadalajara, Spain 60 638 Max-Planck-Institut fur Kernphysik, P. O. box 103980,69029 Heidelberg,, Germany 33 639 Bochum, Ruhr-Universitaet, Bochum, West Germany 15 640 Centre d'Etude Spatiale des Rayonnements, Toulouse, France 16 641 Lockheed Engineering and Science Co., Houston, TX, US 189 642 Institute of Space and Astronautical Science, Kanagawa, Japan 95 643 Max-Planck-Institut fuer Radioastronomie, Bonn, Federal Republic of Germany 13 644 U.S. Navy, E.O. Hulburt Center for Space Research, Washington 13 645 Tata Institute of Fundamental Research, Bombay, India 535 646 Cape Town, University, Rondebosch, Republic of South Africa 140 647 National Cheng Kung University, Tainan, Republic of China 9 648 Natal, University, Durban, Republic of South Africa 12 649 Iowa State University of Science and Technology, Ames, IA 34 650 CSIRO, Div. of Radiophysics, Epping, Australia 411 651 Lockheed Palo Alto Research Laboratory, Palo Alto, CA, US 11 652 California, University, Lawrence Berkeley Laboratory, Berkeley, Calif. 8 653 Univ. of Science and Technology of China, Hefei 27 654 Monash University, Clayton, Victoria, Australia 23 655 Anglo-Australian Observatory, Epping, New South Wales, Australia 96 656 Indian Institute of Astrophysics, Bangalore, India 8 657 Indian Institute of Geomagnetism, Bombay, India 275 658 Manchester, Victoria University, Manchester, England 10 659 Space Technology Ireland, Ltd., Maynooth, Republic of Ireland 20 660 Dublin Institute for Advanced Studies, Dublin, Ireland 17 661 Instituto de Astronomia y Fisica del Espacio, Buenos Aires, Argentina 16 662 Instituto Nacional de Astrofisica, Optica y Electronica, Puebla, Mexico 9 663 Belfast, Queen's University, Belfast, Northern Ireland 24 664 Jet Propulsion Lab., Cal. Tech., Pasadena, CA, US 166 665 CNR, Istituto di Fisica Spazio Interplanetario, Frascati 20 666 Nuclear Development Corp., Pelindaba, Republic of South Africa 27 667 CNRS, Service d'Aeronomie, Verrieres-le-Buisson, France 13 668 Department of Scientific and Industrial Research, Soil Bureau, Lower Hutt, New Zealand 225 669 Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721-0092 645 670 Akademiia Nauk SSSR, Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Moscow, USSR 111 671 Instituto Argentino de Radioastronomia, Villa Elisa, Buenos Aires, Argentina 56 672 Russian Academy of Sciences, Inst. of Geochemistry and Analytical Chemistry, Moscow, Russia 15 673 Vsesoiuznyi Nauchno-Issledovatel'skii Tsentr po Izucheniiu Svoistv Poverkhnosti Vakuuma, USSR 113 674 AN SSSR, Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Troitsk, USSR 8 675 Department of Physics, University of Durham, The Science Laboratories, South Road,Durham DH1 3LE,, UK 21 676 California Institute of Technology, Jet Propulsion Laboratory, Earth and Space Sciences Div., Pasadena, CA 33 677 Kiel, Neue Universitaet, Institut fuer theoretische Physik und Sternwarte, Kiel, West Germany 40 678 Akademiia Nauk SSSR, Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Irkutsk, USSR 117 679 AN SSSR, Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Troitsk 79 680 AN SSSR, Sibirskii Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Irkutsk, USSR 12 681 Akademiia Nauk SSSR, Institut Zemnogo Magnetizma, Ionosfery i Rasprostranenia Radiovoln, Krasnaya Pakhra, USSR 21