• 198 Videos, Slides, Films

• 76 Conservation of natural resources
• 71 Natural resources
• 68 Water
• 64 Land use
• 63 Human geography
• 57 Environmental protection
• 57 Human ecology
• 57 Management
• 56 Economic aspects
• 52 Effect of human beings on
• 52 Nature
• 52 Power resources
• 46 Energy consumption
• 46 Energy development
• 46 Environmental geography
• 30 Pollution
• 28 Social ecology
• 26 Study and teaching
• 23 Environmental sciences
• 23 Social change
• 21 Physical geography
• 20 Economic geography
• 19 Ecosystem management
• 18 Refuse and refuse disposal

• 169 Films for the Humanities & Sciences (Firm)
• 13 Annenberg Learner (Firm)
• 8 Network Ireland Television
• 8 Public Broadcasting Service (U.S.)
• 8 Television Trust for the Environment
• 8 Wild Hare Productions LLC
• 7 Canadian Broadcasting Corporation
• 7 Infobase
• 7 Parthenon Entertainment (Firm)
• 7 System TV (Firm)
• 7 Video Education Australasia
• 6 Agency for Instructional Technology
• 6 Deutsche Welle
• 6 Green Planet Films
• 6 National Geographic Television & Film
• 5 Cambridge Educational (Firm)
• 5 Journeyman Pictures (Firm)
• 5 New Atlantis (Firm)
• 3 4 Learning (Firm)
• 3 Allegro Productions (Firm)
• 3 Fred Friendly Seminars (Firm)
• 3 Java (Firm)
• 2 ABC News Productions
• 2 American Public Television

• 197 English
• 8 Multiple languages
• 1 French
• 1 Hausa
• 1 Lao
• 1 Niger-Kordofanian (Other)
• 1 Spanish
• 1 Tamashek

• 20 Earth (Planet)
• 11 United States
• 8 Africa, Sub-Saharan
• 5 China
• 5 South Asia
• 4 Canada
• 4 India
• 4 Latin America
• 4 Oceania
• 4 South America
• 3 Asia
• 3 Australia
• 3 California
• 3 Middle East
• 3 Southeast Asia
• 2 Africa
• 2 Bangladesh
• 2 Central America
• 2 Europe
• 2 Idaho
• 2 Mexico, Gulf of
• 1 Africa, North
• 1 Alaska
• 1 Alberta
• 1 Amazon River Region

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