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- International Astronomical Union. Colloquium (2)
- Bhatnagar, K. B. (1)
- Bois, E. (1)
- Burns, Joseph A. (1)
- COSPAR. Plenary Meeting (1)
- Ferraz-Mello, Sylvio (1)
- Henrard, J. (1)
- International Astronomical Symposium (1)
- International Symposium for Natural and Artificial Satellite Motion (1977 : University of Texas at Austin) (1)
- International Workshop on Space Dynamics and Celestial Mechanics (1)
- Kivelson, M. G. (Margaret Galland), 1928- (1)
- Matthews, Mildred Shapley (1)
- Nacozy, Paul E. (1)
- Oberti, P. (1)
- Szebehely, Victor G., 1921- (1)
- University of Texas at Austin. Space Programme (1)
- Vikram Sarabhai Space Centre (1)