• 5 Verona Shelving Facility
• 3 MERIT Library
• 2 College Library
• 2 Steenbock Library
• 2 Wisconsin's Water Library
• 1 Geology and Geophysics Library (Leith)
• 1 Memorial Library

• 74 Videos, Slides, Films

• 30 DVDs
• 1 VHS Videocassettes

• 48 Nature
• 20 Climatic changes
• 16 Environmental aspects
• 16 Human ecology
• 10 Ecology
• 8 Environmental degradation
• 8 Global warming
• 6 Environmental conditions
• 5 Animals
• 5 Citizen participation
• 5 Description and travel
• 5 Rain forest ecology
• 5 Social aspects
• 4 Bee culture
• 4 Biodiversity
• 4 Economic aspects
• 4 Environmental protection
• 4 Honeybee
• 4 Sustainable development
• 4 Tourism
• 3 Biotic communities
• 3 Deforestation
• 3 Extinction (Biology)
• 3 Human geography

• 18 Bullfrog Films
• 7 Video Project
• 5 Canadian Broadcasting Corporation
• 4 Bowermaster, Jon, 1954-
• 4 National Film Board of Canada
• 4 Telefilm Canada
• 3 Alexander Street Press
• 3 DiCaprio, Leonardo
• 3 E1 Entertainment (Firm)
• 3 Fricke, Ron
• 3 Green Planet Films
• 3 Icarus Films
• 3 MPI Home Video (Firm)
• 3 Magidson, Mark
• 3 True Mind (Firm)
• 2 ARTE France
• 2 Aguirre, Monti
• 2 Appian Way (Firm)
• 2 Arcane Pictures (Firm)
• 2 Bendick, Eric
• 2 Boyd, Liona
• 2 Bradshaw, Steve (Journalist)
• 2 Bridges, Jeff, 1949-
• 2 British Broadcasting Corporation
• 2 Calm Productions (Firm)

• 69 English
• 2 No linguistic content
• 1 Austronesian (Other)
• 1 Chinese
• 1 French
• 1 German
• 1 Indonesian
• 1 Inupiaq
• 1 Malay
• 1 Tok Pisin
• 1 Turkish
• 1 Vietnamese

• 5 Amazon River Region
• 4 Earth (Planet)
• 4 Galapagos Islands
• 4 United States
• 3 Canada
• 2 Arctic regions
• 2 British Columbia
• 2 New York
• 2 New York (State)
• 2 Nootka Sound
• 1 Africa
• 1 Arizona
• 1 Banks Island
• 1 Banks Island (N.W.T.)
• 1 Berlin
• 1 Colombia
• 1 Europe
• 1 Everglades
• 1 Everglades National Park
• 1 Everglades National Park (Fla.)
• 1 Florida
• 1 Germany
• 1 Grand Canyon
• 1 Grand Canyon (Ariz.)
• 1 Greenland

Limit year range