• 7 Videos, Slides, Films

• 6 DVDs

• 3 Wolves
• 2 History
• 2 Natural history
• 2 Volcanoes
• 1 Animals
• 1 Asteroids
• 1 Bears
• 1 Blue whale
• 1 Collisions with Earth
• 1 Continental drift
• 1 Dolphins
• 1 Historical geology
• 1 Hyenas
• 1 Indians of North America
• 1 Jaguar
• 1 Leopard
• 1 Lion
• 1 National parks and reserves
• 1 Nature
• 1 Plate tectonics
• 1 Reintroduction
• 1 Trenches
• 1 Tsunamis
• 1 Waterfalls
• 1 Wildlife reintroduction

• 2 Arts and Entertainment Network
• 2 Landis, Bob, 1940-
• 2 National Geographic Society (U.S.)
• 2 National Geographic Television
• 2 National Geographic Television & Film
• 2 New Video Group
• 2 WNET (Television station : New York, N.Y.)
• 2 Warner Home Video (Firm)
• 1 Armstrong, Brian
• 1 BBC Worldwide Ltd.
• 1 British Broadcasting Corporation
• 1 Ereira, Alan
• 1 Henry, Christine Jameson
• 1 Hess, Janet
• 1 Hicklin, William
• 1 History (Television network)
• 1 History Channel (Television network)
• 1 Johnson, Corey, 1961-
• 1 Kelly, Ned
• 1 Manfull, James
• 1 National Geographic Channel (Television station : Washington, D.C.)
• 1 Pioneer Productions
• 1 Public Broadcasting Service (U.S.)
• 1 Sechler, Craig
• 1 Seymone, Robert Wilson

• 7 English

• 1 Alps
• 1 Atacama Desert (Chile)
• 1 Earth (Planet)
• 1 Gabon
• 1 Great Lakes (North America)
• 1 Hawaii
• 1 Iceland
• 1 Idaho
• 1 Krakatoa (Indonesia)
• 1 Montana
• 1 Ness, Loch (Scotland)
• 1 New York (N.Y.)
• 1 North America
• 1 Pacific Area
• 1 Rocky Mountains
• 1 San Andreas Fault (Calif.)
• 1 Wyoming
• 1 Yellowstone National Park Region

• 7 Documentary television programs
• 4 Nonfiction television programs
• 4 Video recordings for the hearing impaired
• 3 Wildlife television programs
• 2 Science television programs
• 1 Television programs
• 1 Television series

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