• 392 Videos, Slides, Films

• 59 Geography
• 59 Natural resources
• 55 Ecosystem management
• 52 Earth sciences
• 52 History
• 48 Human geography
• 41 Landforms
• 40 Geology
• 39 Description and travel
• 32 Water use
• 30 Biotic communities
• 28 Travel
• 28 Voyages and travels
• 26 Historical geology
• 26 Human ecology
• 24 Environmental sciences
• 24 Marine biology
• 24 Social life and customs
• 22 Ecology
• 22 Plate tectonics
• 21 Environmental aspects
• 21 Weather
• 20 Study and teaching
• 19 Social ecology

• 336 Films for the Humanities & Sciences (Firm)
• 74 Infobase
• 43 American Public Television
• 39 555 Productions, Inc
• 21 BBC Worldwide Ltd
• 20 Canamedia (Firm)
• 18 Public Broadcasting Service (U.S.)
• 14 Cambridge Educational (Firm)
• 14 National Geographic Television & Film
• 13 Camille S. DeBose (Firm)
• 11 Electric Sky (Firm)
• 11 German United Distributors
• 11 PBS (Firm)
• 10 Agency for Instructional Technology
• 8 Allegro Productions (Firm)
• 6 Looking Glass Pictures
• 6 National Geographic Society (U.S.)
• 5 ARTE France
• 5 ClickView/VEA (Firm)
• 5 Granada Media (Firm)
• 5 National Geographic Digital Media (Firm)
• 5 Tele Images Creations (Firm)
• 4 Ampersand Film & Video Tape Productions
• 4 Parthenon Entertainment (Firm)

• 390 English
• 15 Spanish
• 1 Multiple languages

• 61 Europe
• 30 Latin America
• 28 South America
• 24 Asia
• 18 Central America
• 17 Africa
• 16 Earth (Planet)
• 16 India
• 15 North America
• 15 United States
• 13 Middle East
• 12 South Asia
• 12 Southeast Asia
• 9 China
• 8 Africa, Sub-Saharan
• 5 Mexico
• 4 Japan
• 3 Arabian Peninsula
• 3 Australia
• 3 Egypt
• 3 Hawaii
• 3 Mekong River
• 3 Nicaragua
• 3 Oceania
• 3 Wales

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