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- Rycroft, Michael J. (13)
- COSPAR. Plenary Meeting (8)
- COSPAR (4)
- Akademyah ha-leʾumit ha-Yiśreʾelit le-madaʿim (1)
- Bowhill, S. A. (1)
- COSPAR Symposium and Workshop on Results from Coordinated Upper Atmosphere Measurement Programs (1975 : Varna, Bulgaria) (1)
- COSPAR/IAGA Symposium on Minor Constituents and Excited Species, Philadelphia, 1976 (1)
- Dessler, A. J. (1)
- Haskell, G. (1)
- Houghton, John Theodore, 1931- (1)
- Jaffe, L. D. (1)
- Kondratʹev, K. I︠A︡. (Kirill I︠A︡kovlevich) (1)
- National Academy of Sciences (U.S.) (1)
- Reasenberg, R. D. (1)
- Runcorn, S. K. (1)
- Sagan, Carl, 1934-1996 (1)
- Stickland, A. C. (1)
- Symposium on Dynamics of the Thermosphere and Ionosphere Above 120km (1)
- Symposium on High Angular Resolution Astronomical Observations from Space (1)
- Symposium on Noctilucent Clouds and Interplanetary Dust, Constance, 1973 (1)
- Symposium on Remote Sounding of the Atmosphere (1)
- Symposium on Total Solar Eclipse of 7 March, 1970 (1)