• 82 Conservation of natural resources
• 74 Environmental protection
• 64 Human geography
• 58 Management
• 56 Environmental aspects
• 44 Economic geography
• 40 Water
• 37 Human ecology
• 34 International economic relations
• 32 Effect of human beings on
• 32 Nature
• 29 International business enterprises
• 29 Social ecology
• 28 Land use
• 27 Social change
• 24 Social institutions
• 23 Business enterprises
• 23 Electronic commerce
• 23 Environmental geography
• 23 Moral and ethical aspects
• 23 Natural resources
• 23 Study and teaching
• 22 Computers
• 22 Technological innovations

• 181 Films for the Humanities & Sciences (Firm)
• 15 Infobase
• 10 System TV (Firm)
• 10 Wild Hare Productions LLC
• 9 BBC Worldwide Ltd
• 8 Ethical Markets Media
• 8 Network Ireland Television
• 8 Video Education Australasia
• 7 Canadian Broadcasting Corporation
• 7 Deutsche Welle
• 7 MacNeil/Lehrer Productions
• 6 4 Learning (Firm)
• 6 Agency for Instructional Technology
• 6 Journeyman Pictures (Firm)
• 6 Meridian Education Corporation
• 6 Parthenon Entertainment (Firm)
• 5 EMC Consulting PTY Ltd/ Flame
• 5 Intelligence² (U.S.)
• 5 Moyers, Bill D
• 4 ABC News Productions
• 4 Fred Friendly Seminars (Firm)
• 4 National Association of Home Builders of the United States
• 4 Public Broadcasting Service (U.S.)
• 4 Sunrise Media LLC

• 193 English
• 4 Multiple languages
• 4 Spanish

• 17 United States
• 12 Africa, Sub-Saharan
• 7 Africa
• 7 China
• 6 Latin America
• 5 Asia
• 4 South America
• 3 Africa, North
• 3 Australia
• 3 Oceania
• 3 Southeast Asia
• 2 India
• 2 Middle East
• 2 Pacific Area
• 2 South Asia
• 1 Amazon River
• 1 Asia, Central
• 1 Bolivia
• 1 Canada
• 1 Costa Rica
• 1 Developing countries
• 1 East Asia
• 1 Ecuador
• 1 Europe
• 1 Former Soviet republics

• 194 Internet videos
• 188 Educational films
• 177 Videorecording
• 97 Video recordings for the hearing impaired
• 15 Case studies
• 5 Video recording

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