• 36 Videos, Slides, Films

• 3 DVDs

• 13 Study and teaching
• 11 Origin
• 10 Human beings
• 9 Evolution
• 9 Geology
• 9 Methodology
• 9 Research
• 7 Physical geography
• 7 Primates
• 6 Biology
• 5 Archaeology
• 5 Ecosystem management
• 5 Historical geology
• 4 Chemistry
• 4 Crime
• 4 Environmental sciences
• 4 Experiments
• 4 Physics
• 4 Politics and government
• 4 Psychology
• 4 Social control
• 4 Sociology
• 3 Biodiversity
• 2 Antiquities

• 33 Films Media Group
• 7 BBC Worldwide Ltd
• 4 CTE (Carlton) Limited
• 4 National Geographic Television & Film
• 4 Uniview Worldwide
• 3 Public Broadcasting Service (U.S.)
• 2 INA
• 2 Infobase
• 1 Ampersand Film & Video Tape Productions
• 1 BBC Active (Firm)
• 1 BBC Education & Training
• 1 British Broadcasting Corporation
• 1 Central Productions
• 1 Channel Four (Great Britain)
• 1 Clifton, Dan
• 1 Dakowski, Bruce
• 1 Falling Walls Foundation
• 1 MacNeil/Lehrer Productions
• 1 Mernit, John
• 1 Miles, Richard, 1969-
• 1 National Film Board of Canada
• 1 National Geographic Channel (Television station : Washington, D.C.)
• 1 Royle, David
• 1 Shrapnel, John

• 36 English
• 2 Multiple languages

• 6 United States
• 2 Africa
• 2 North America
• 1 Africa, Sub-Saharan
• 1 Russia
• 1 Spitalfields (London, England)
• 1 W

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