• 1 DVDs

• 122 Natural resources
• 105 Environmental protection
• 83 Economic aspects
• 75 Environmental aspects
• 75 Environmental policy
• 73 Water
• 63 Pollution
• 49 Refuse and refuse disposal
• 49 Toxicology
• 46 Effect of human beings on
• 46 Human ecology
• 46 Nature
• 45 Waste disposal
• 44 Land use
• 41 Management
• 37 Business ethics
• 36 Human geography
• 30 Power resources
• 28 Environmental geography
• 28 Government policy
• 26 Moral and ethical aspects
• 23 Social ecology
• 21 Study and teaching
• 19 Energy development

• 229 Films Media Group
• 18 Infobase
• 16 Wild Hare Productions LLC
• 12 Public Broadcasting Service (U.S.)
• 12 Video Education Australasia
• 10 Ethical Markets Media
• 10 Television Trust for the Environment
• 8 System TV (Firm)
• 7 4 Learning (Firm)
• 7 Canadian Broadcasting Corporation
• 7 Deutsche Welle
• 6 ABC International
• 6 EMC Consulting PTY Ltd/ Flame
• 6 Parthenon Entertainment (Firm)
• 5 ABC News Productions
• 5 BBC Worldwide Ltd
• 5 Java (Firm)
• 5 Shopware (Firm)
• 5 Visual Education Centre
• 4 Fred Friendly Seminars (Firm)
• 4 Information Television Network
• 4 Journeyman Pictures (Firm)
• 4 National Association of Home Builders of the United States
• 3 Animal Fund

• 230 English
• 6 Multiple languages
• 3 Spanish
• 1 French

• 14 Africa, Sub-Saharan
• 11 United States
• 9 Africa
• 6 China
• 4 South Asia
• 3 Latin America
• 3 South America
• 3 Southeast Asia
• 2 Australia
• 2 Bangladesh
• 2 India
• 2 Oceania
• 1 Africa, North
• 1 Amazon River
• 1 America
• 1 Asia
• 1 Bali (Indonesia : Province)
• 1 Bolivia
• 1 Brazil
• 1 California
• 1 Central America
• 1 Developing countries
• 1 Earth (Planet)
• 1 East Asia
• 1 Europe

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