Author
SpringerLink (Online Service)
1,686
ScienceDirect (Online service)
847
Infobase,
694
SpringerLink (Online service)
663
Films for the Humanities & Sciences (Firm)
606
Infobase
604
Public Broadcasting Service (U.S.)
107
Oxford Scholarship Online
101
MVD (Firm)
86
United States. Central Intelligence Agency
74
Geological Survey (U.S.)
73
EBSCOhost
57
Geological Survey (U.S.),
50
American Public Television
48
Arts and Entertainment Network
48
Cerebellum Corporation
47
BBC Worldwide Ltd
41
555 Productions, Inc
39
President's Council on Physical Fitness and Sports (U.S.)
35
ABC International
34
Video Education Australasia
33
Broken Arrow Media (Firm)
28
Cambridge Educational (Firm)
28
ClickView/VEA (Firm)
28
Bederson, Benjamin
26
National Association for Sport and Physical Education
26
Annenberg Learner (Firm)
23
BBC (Firm)
23
Gold, Victor
23
Inside Science (Firm)
21
TVF International (Firm)
21
Canamedia (Firm)
20
Colorado State University. Department of Atmospheric Science
20
Library of Congress. National Library Service for the Blind and Physically Handicapped
20
Bethell, D.
19
Granada Media (Firm)
19
Weight-control Information Network (U.S.)
19
Trader Multimedia Inc. (Firm)
18
Video Education America
18
Liacos Educational Media (Firm)
17
National Institute of Standards and Technology (U.S.)
17
United States,
17
Ivanhoe Broadcast News (Firm)
16
National Geographic Society (U.S.)
16
National Institute of Diabetes and Digestive and Kidney Diseases (U.S.)
16
Library of Congress. National Library Service for the Blind and Physically Handicapped,
15
Makematic (Firm)
15
National Geographic Television & Film
15
United States. Department of State,
15
Agency for Instructional Technology
14
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