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- International Astronomical Union (9)
- International Astronomical Union. Colloquium (5)
- Royal Society (Great Britain) (4)
- European Space Agency (3)
- Hellwege, K. H. (3)
- International Astronomical Union. Central Bureau for Astronomical Telegrams (3)
- International Astronomical Union. Symposium (3)
- Marsden, Brian G. (3)
- Minor Planet Center (3)
- NATO Advanced Study Institute (3)
- Roy, A. E. (Archie Edmiston), 1924- (3)
- Society of Photo-optical Instrumentation Engineers (3)
- United States. National Aeronautics and Space Administration (3)
- American Astronomical Society (2)
- Bardwell, Conrad M. (2)
- Clarke, D. (David), 1936- (2)
- General Assembly of the IAU (2)
- Guseinov, O. H. (2)
- Hellwege, A. M. (2)
- Henden, Arne A. (2)
- Hudson, H. S. (2)
- Hunt, Garry E. (2)
- Jaschek, Carlos (2)
- Kaitchuck, Ronald H. (2)
- Kjär, K. (2)
- Matthews, Mildred Shapley (2)
- Morrison, David, 1940- (2)
- Murakami, Harutaro (2)
- Narlikar, Jayant Vishnu, 1938- (2)
- Schaifers, K. (2)
- Szebehely, Victor G., 1921- (2)
- Voigt, H. H. (Hans Heinrich), 1921- (2)
- Wayman, Patrick A. (2)
- 科学技術和英表現辞典刊行会 (2)
- AAS/AIAA Astrodynamics Conference (1)
- Abraham, Ralph, 1936- (1)
- Advanced Course of Swiss Society of Astronomy and Astrophysics (1)
- Aerospace Corporation (1)
- Agayev, A. G. (1)
- Ahrens, T. J. (Thomas J.), 1936- (1)
- Aller, Lawrence H. (Lawrence Hugh), 1913- (1)
- Amnuel, P. R. (1)
- Angenheister, G. (1)
- Assembly of Mathematical and Physical Sciences (U.S.). Astronomy Survey Committee (1)
- Astronomický ústav SAV (1)
- Audouze, Jean, 1940- (1)
- Aveni, Anthony F. (1)
- Baker, Victor R. (1)
- Balázs, Béla (1)
- Barnes, C. A. (1)
- Barr, Larry D. (1)
- Basov, N. G. (Nikolaĭ Gennadievich), 1922- (1)
- Bechler, Z. (1)
- Beckman, J. E. (1)
- Benz, A. O. (1)
- Biermann, P. (1)
- Bilson, Elizabeth M. (1)
- Bimberg, D. (1)
- Binney, James, 1950- (1)
- Blandford, Roger D. (1)
- Boynton, William V. (1)
- Brahic, A. (1)
- Breuer, Reinhard A., 1946- (1)
- Briggs, Geoffrey, 1941- (1)
- British National Committee on Space Research (1)
- Brosche, P. (Peter) (1)
- Brown, Charles M. (Charles Moseley), 1943- (1)
- Broy, M., 1949- (1)
- Brézis, H. (Haim) (1)
- Brück, H. A. (Hermann Alexander), 1905- (1)
- Burbidge, Geoffrey R. (1)
- COSPAR (1)
- Calame, O. (Odile), 1941- (1)
- Campbell, S. L. (Stephen La Vern), 1945- (1)
- Cap, Ferdinand (1)
- Carnegie, Dale, 1888-1955 (1)
- Carrington, A. (1)
- Centre national d'études spatiales (France) (1)
- Chan, William S. (1)
- Chapman, Clark R. (1)
- Chappe d'Auteroche, abbé, 1728-1769 (1)
- Cioranescu, D. (Doïna) (1)
- Clayton, Donald D. (1)
- Commission of the European Communities (1)
- Cooper, Henry S. F. (1)
- Coradini, Angioletta (1)
- Cornell, James (1)
- Cox, John P. (1)
- Coyne, George V. (1)
- Craven, B. D. (Bruce Desmond) (1)
- Crawford, David Livingstone, 1931- (1)
- Creer, K. M. (1)
- D'Alli, Richard (1)
- Davies, Paul Charles William (1)
- De Sabbata, Venzo (1)
- DeVorkin, David H., 1944- (1)
- Dewdney, P. E. (Peter E.) (1)
- Doazan, Vera (1)
- Dodd, R. K. (Roger K.) (1)
- Doz, Vicente de, ca. 1736-1781 (1)