※一部利用できない機能があります
- International Astronomical Union (4)
- International Union of Theoretical and Applied Mechanics (4)
- International Astronomical Union. Symposium (2)
- Symposium on Cosmical Gas Dynamics (2)
- Thomas, Richard Nelson, 1921- (2)
- COSPAR (1)
- Centre international d'astrophysique (1)
- Duncombe, Raynor L. (1)
- International Council of Scientific Unions (1)