• 1 College Library
• 1 MERIT Library
• 1 Steenbock Library

• 3 DVDs

• 19 Cosmology
• 19 Natural history
• 17 Astronomy
• 15 Ecology
• 11 Evolution
• 10 Animals
• 10 Biotic communities
• 10 Habitat (Ecology)
• 9 Human ecology
• 5 Biodiversity
• 5 Biology
• 5 Earth sciences
• 5 Effect of human beings on
• 5 Motion picture authorship
• 5 Nature
• 5 Weather
• 4 Landscapes
• 4 Life
• 3 Cities and towns
• 3 Plate tectonics
• 2 Animals and civilization
• 2 Crust
• 2 Desert ecology
• 2 Deserts
• 2 Galaxies

• 19 Independent Communications Associates
• 19 Kennard, David
• 19 Music Video Distributors, Inc.
• 19 Northcutt Productions
• 19 Northcutt, Patsy
• 19 Swimme, Brian
• 19 Tucker, Mary Evelyn
• 19 Yale University. School of Forestry and Environmental Studies
• 15 BBC Worldwide Ltd.
• 13 British Broadcasting Corporation. Natural History Unit
• 10 Attenborough, David, 1926-
• 9 BBC America
• 9 France télévision
• 9 Tencent Pictures
• 9 Zweites Deutsches Fernsehen
• 5 British Broadcasting Corporation
• 5 Cordey, Huw
• 5 Silverback Films (Firm)
• 4 BBC Studios
• 4 Charles, Ed
• 4 Johnson, Corey, 1961-
• 4 Open University
• 4 Public Broadcasting Service (U.S.)
• 4 Tencent Penguin Pictures
• 3 Flight 33 Productions (Firm)

• 44 English

• 19 Universe
• 1 Africa
• 1 Great Lakes (Africa)
• 1 Great Rift Valley
• 1 Solar system
• 1 Sun

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