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- International Astronomical Union (5)
- International Astronomical Union. Symposium (3)
- Groth, Hans-Günther (1)
- Heeschen, David S. (1)
- Hunt, Garry E (1)
- IAU/RAS Colloquium (1)
- International Union of Radio Science (1)
- Jaschek, Mercedes, 1926- (1)
- Loore, Camiel W. H. de (1)
- Royal Astronomical Society (1)
- Wade, Campbell M. (1)
- Wayman, Patrick A. (1)
- Willis, A. J. (Allan J.) (1)