• 2 Steenbock Library
• 1 College Library
• 1 Wisconsin's Water Library

• 6 Animals
• 4 Biotic communities
• 4 Habitat (Ecology)
• 4 Natural history
• 3 Desert ecology
• 3 Ecology
• 3 Life (Biology)
• 3 Mammals
• 2 Adaptation
• 2 Adaptation (Biology)
• 2 Animal migration
• 2 Behavior
• 2 Biodiversity
• 2 Floods
• 2 Insects
• 2 Marine ecology
• 2 Ocean
• 2 Plants
• 2 Polar bear
• 2 Reproduction
• 2 Salmon
• 2 Sardines
• 2 Whales
• 1 Amber
• 1 Amber fossils

• 9 Warner Home Video (Firm)
• 8 Discovery Channel (Firm)
• 5 2 Entertain (Firm)
• 5 BBC Earth (Firm)
• 4 BBC Worldwide Americas, Inc
• 3 BBC Video (Firm)
• 3 Open University
• 2 Animal Planet (Television network)
• 2 Bass, Karen
• 2 Fenton, George
• 2 Films for the Humanities & Sciences (Firm)
• 2 Griffiths, Alex
• 2 Holmes, Martha, 1961-
• 2 Salisbury, Mike
• 2 Tapster, Dan
• 1 2 Entertain Video (Firm)
• 1 Aitchison, John (Cinematographer)
• 1 Allan, Douglas
• 1 Anderson, Justin
• 1 Appleby, Bridget (Bridget Marion)
• 1 Apsell, Paula S
• 1 BBC America
• 1 Barton, Miles

• 17 English
• 1 French

• 3 Arctic regions
• 3 Tropics
• 2 Alaska
• 2 Botswana
• 2 British Columbia
• 2 Cold regions
• 2 Eastern Hemisphere
• 2 Northern Hemisphere
• 2 Okavango River Delta
• 2 Polar regions
• 2 Serengeti Plain
• 2 South Africa
• 2 Southern Hemisphere
• 2 Tanzania
• 2 Western Hemisphere
• 1 Africa
• 1 Antarctica
• 1 Antárctica
• 1 Arctic Regions
• 1 Congo River
• 1 Congo River Valley
• 1 Earth (Planet)
• 1 Europe
• 1 Great Plains
• 1 Kalahari Desert

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