Author
Films for the Humanities & Sciences (Firm)
Infobase
33
Meridian Education Corporation
8
Video Education Australasia
6
Motion Masters Film & Video Production
3
Cambridge Educational (Firm)
2
Classroom Video (Firm)
2
MacNeil/Lehrer Productions
2
Filmsters (Firm)
1
Futura Film (Firm)
1
Gully International
1
Hiltz Squared Media Group Inc
1
Paul Devlin Productions
1
Successful Images, Inc
1