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- Bullfrog Films33
- National Film Board of Canada, production company, distributor14
- Bullfrog Films, distributor12
- Christensen, David, 1966-10
- Parker, Scott10
- United States. Department of the Interior, production company10
- Deutsche Stiftung für Internationale Entwicklung. Zentralstelle für Erziehung, Wissenschaft und Dokumentation, production company8
- Australian Broadcasting Corporation5
- Cheney, Ian5
- Ellis, Curt5
- Good Docs (Firm), distributor5
- New Video Group5
- Shiva, Vandana5
- 220 Productions4
- De Graaf, John4
- Gailey, Tony4
- Garton, Andrew4
- Independent Television Service4
- Jeanes, Nick4
- Mollison, B. C.4