Author
Infobase,
408
ScienceDirect (Online service)
88
SpringerLink (Online service)
79
Public Broadcasting Service (U.S.)
67
Cerebellum Corporation
49
BBC Worldwide Learning
42
BBC (Firm)
34
Off the Fence Productions
23
Films for the Humanities & Sciences (Firm)
21
Infobase
21
Jeon, Kwang W.
20
Discovery Education (Firm)
15
Film Ideas (Firm)
15
Green Planet Films
15
MVD (Firm)
13
Macfadyen, A.
13
ClickView/VEA (Firm)
11
Parthenon Entertainment (Firm)
11
Inside Science (Firm)
10
Makematic (Firm)
9
Australian Broadcasting Corporation
8
Author, Unknown
8
Fitter, Alastair
8
Network Ireland Television
8
University of Akron
8
Unknown,
8
Ford, E. D.
7
National Geographic Society (U.S.)
7
American Public Television
6
Begon, Michael
6
Cragg, J. B. 1910-
6
International Society for Cell Biology
6
TED (Firm)
6
EBSCOhost
5
Filmhub (Firm)
5
Video Education America
5
American Institute of Biological Sciences
4
Autentic Distribution GmbH (Firm)
4
BBC Worldwide Ltd
4
Cable News Network
4
Gadd, Geoffrey M.
4
Laskin, Allen I., 1928-
4
Nelson, Gideon E.
4
Arts and Entertainment Network
3
Bennett, J. W.
3
Dunlap, Jay C.
3
Friedmann, Theodore, 1935-
3
Geological Survey (U.S.),
3
Hine, Robert,
3
Ideas Roadshow (Firm)
3
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