Author
SpringerLink (Online Service)
53
Infobase,
49
Films for the Humanities & Sciences (Firm)
32
Infobase
32
Trader Multimedia Inc. (Firm)
18
Public Broadcasting Service (U.S.)
8
Arts and Entertainment Network
6
Cambridge Educational (Firm)
6
TVF International (Firm)
5
SpringerLink (Online service)
4
Freeman, Ken, 1940-
3
Longair, Malcolm S., 1941-
3
MVD (Firm)
3
Schneider, P. 1958-
3
United States. National Aeronautics and Space Administration
3
Australian Broadcasting Corporation
2
BBC (Firm)
2
Cowley, William
2
ESO Workshop
2
European Southern Observatory
2
Keel, W. C.
2
Oswalt, Terry D.
2
ScienceDirect (Online service)
2
4 Learning (Firm)
1
Adam, Len,
1
Air Force History and Museums Program (U.S.),
1
Allegro Productions (Firm)
1
American Museum of Natural History
1
Appenzeller, I. 1940-
1
Arp, Halton C.
1
Autentic Distribution GmbH (Firm)
1
BBC Worldwide Ltd
1
Bachiller, Rafael
1
Baryshev, Yurij
1
Bender, Ralf
1
Bland-Hawthorn, J.
1
Block, David
1
Block, David L.
1
Borissova, J.
1
Boselli, Alessandro, 1965-
1
Bromm, Volker
1
Böhringer, Hans
1
Cantwell, Thérèse,
1
Cassisi, Santi
1
Cerebellum Corporation
1
Cernicharo, José
1
Chapman, Robert DeWitt, 1937-
1
Christensen, Lars Lindberg
1
Chávez Dagostino, Miguel
1
Combes, F.
1
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