• 7 Videos, Slides, Films

• 3 Environmental aspects
• 1 Agricultural conservation
• 1 Anderson, Denis Les
• 1 Animal communication
• 1 Animal rights
• 1 Behavior
• 1 Cetacea
• 1 Conservation
• 1 Deforestation
• 1 Donkeys
• 1 Economic aspects
• 1 Endangered Species Act of 1973
• 1 Endangered species
• 1 Energy development
• 1 Environmentalism
• 1 Government policy
• 1 Gwich'in Indians
• 1 Habitat conservation
• 1 Herding
• 1 Honeybee
• 1 Human-animal relationships
• 1 Insects
• 1 Logging
• 1 Marine biologists

• 4 Bullfrog Films
• 1 Alison, Bob
• 1 Boudart, Bo
• 1 Cater, Anna
• 1 Cissell, Jim
• 1 Coyote, Peter
• 1 De Graaf, John
• 1 Djerassi, Dale
• 1 Earth Island Institute
• 1 Ecology Center, Inc
• 1 Flores, Dan, 1948-
• 1 Fund for Animals
• 1 Grunebaum, Eric
• 1 Haney, William M.
• 1 Hart, Emily, 1957-
• 1 Hawes-Davis, Doug
• 1 High Plains Films
• 1 Kirkpatrick, Jay F.
• 1 Lobitos Creek Ranch (Firm)
• 1 MacGaw, Micha
• 1 MacKinnon, Susan
• 1 Mitra Films
• 1 Moore, Stefan
• 1 Most, Stephen
• 1 Payne, Roger, 1935-

• 7 English

• 3 United States
• 1 Alaska
• 1 Arctic National Wildlife Refuge
• 1 Arctic National Wildlife Refuge (Alaska)
• 1 Oregon
• 1 Suriname
• 1 West (U.S.)
• 1 West United States

Limit year range