• 174 Videos, Slides, Films

• 86 Environmental sciences
• 81 Water use
• 62 Power resources
• 50 Landforms
• 47 Land use
• 43 Earth sciences
• 42 Conservation of natural resources
• 42 Geography
• 42 Water-supply
• 35 Physical geography
• 32 Environmental aspects
• 30 Environmental protection
• 28 Management
• 25 Energy development
• 23 Energy consumption
• 22 Pollution
• 19 Business ethics
• 18 Government policy
• 18 Human ecology
• 17 Geology
• 16 Effect of human beings on
• 16 Nature
• 14 Physical geology
• 13 Biotic communities

• 174 Films Media Group
• 117 Infobase
• 64 Films for the Humanities & Sciences (Firm)
• 17 PBS (Firm)
• 13 Camille S. DeBose (Firm)
• 11 Green Planet Films (Firm)
• 8 Film Ideas (Firm)
• 7 Public Broadcasting Service (U.S.)
• 6 BBC (Firm)
• 6 Parthenon Entertainment (Firm)
• 5 CINEFETE (Firm)
• 5 Canadian Broadcasting Corporation
• 5 Ethical Markets Media
• 5 National Geographic Digital Media (Firm)
• 5 Video Education Australasia
• 4 Bloomberg LP
• 4 Cambridge Educational (Firm)
• 4 Global Screen (Firm)
• 4 Journeyman Pictures (Firm)
• 3 Australian Broadcasting Corporation (Firm)
• 3 Cerebellum Corporation (Firm)
• 3 Kwanza (Firm)
• 3 Open University
• 2 ABC International
• 2 CNN (Firm)

• 174 English

• 4 Asia
• 4 Earth (Planet)
• 3 China
• 3 South Asia
• 2 Africa
• 2 Africa, Sub-Saharan
• 2 Europe
• 2 India
• 2 Middle East
• 1 Afghanistan
• 1 Africa, North
• 1 Alaska
• 1 Amazon River
• 1 Brazil
• 1 California
• 1 East Asia
• 1 Japan
• 1 Korea
• 1 North America
• 1 Pacific Area
• 1 Peru
• 1 South America
• 1 United Arab Emirates
• 1 United States

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