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- International Astronautical Congress (37)
- Duboshin, G. N. (Georgiĭ Nikolaevich) (13)
- Hilton, W. F. (13)
- Łunc, Michał (13)
- Jaumotte, A. (8)
- Brun, Edmond (5)
- Hersey, Irwin (5)
- International Academy of Astronautics (5)
- Contensou, P. (4)
- Lunar International Laboratory Symposium (4)
- Malina, Frank J. (4)
- Baker, Robert M. L. (1)
- Brun, E. A. (1)
- International Orbital Laboratory Symposium (1)
- Makemson, Maud W. (1)
- Napolitano, Luigi G. (1)
- Singer, S. Fred (Siegfried Fred), 1924- (1)
- Thompson, Gordon Vallins Elliot (1)