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- COSPAR (6)
- International Astronomical Union (6)
- International Astronomical Union. Symposium (4)
- Baity, W. A. (1)
- Dryer, Murray (1)
- Duncombe, Raynor L. (1)
- Halliday, Ian (1)
- International Astronomical Union. Colloquium (1)
- International Council of Scientific Unions. Scientific Committee on Solar-Terrestrial Physics (1)
- International Union of Theoretical and Applied Mechanics (1)
- Kane, Sharad R. (1)
- McIntosh, Bruce A. (1)
- Peterson, Laurence E., 1931- (1)
- Symposium On X-Ray Astronomy (1)
- Tandberg-Hanssen, E. (Einar), 1921- (1)