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- Films for the Humanities & Sciences (Firm)168
- Infobase165
- Bullfrog Films86
- Bullfrog Films, distributor21
- Infobase, film distributor21
- CBS News, production company20
- Green Planet Films18
- Coyote, Peter17
- Baroff, Beverly16
- Wiland, Harry16
- Public Broadcasting Service (U.S.), publisher15
- Bell, Dale, 1938-14
- Independent Television Service14
- Kanopy (Firm)14
- Annenberg Learner (Firm)13
- Canadian Broadcasting Corporation12
- Food Forward Productions, production company12
- Ridge, Justin12
- Roden, Greg12
- CBS News11