Author
Infobase,
29
Films for the Humanities & Sciences (Firm)
17
Infobase
17
American Academy of Pediatrics
11
Ivanhoe Broadcast News (Firm)
8
Learning Zone Express (Firm)
6
Meridian Education Corporation
4
BBC (Firm)
3
Video Education Australasia
2
BBC Worldwide Learning
1
British Association of Sport and Medicine
1
Cambridge Educational (Firm)
1
Cerebellum Corporation
1
German United Distributors
1
Information Television Network
1
LSI Inc (Firm)
1
Learning Zone Xpress (Firm)
1
MacLaren, D.
1
MacNeil/Lehrer Productions
1
Mirror/Mirror Productions, Inc. (Firm)
1
National Educational Video, Inc
1
Public Broadcasting Service (U.S.)
1
ScienCentral, Inc
1