• 2 MERIT Library

• 601 Videos, Slides, Films

• 2 DVDs

• 139 Pollution
• 126 Ecological regions
• 115 Biotic communities
• 105 Conservation of natural resources
• 101 Environmental protection
• 98 Environmental policy
• 96 Environmental law
• 94 Biology
• 92 Air
• 92 Biodiversity
• 92 Climatic changes
• 87 Global warming
• 86 Natural resources
• 73 Life sciences
• 68 Ecology
• 59 Ecological zones
• 53 Water
• 52 Water use
• 44 Toxicology
• 43 Land use
• 41 Water-supply
• 38 Documentary-style films
• 38 Endangered ecosystems
• 38 Endangered species

• 504 Films Media Group
• 459 Infobase
• 102 PBS (Firm)
• 95 Kanopy (Firm)
• 51 Green Planet Films (Firm)
• 42 BBC (Firm)
• 40 The Video Project (Firm)
• 36 Films for the Humanities & Sciences (Firm)
• 29 Film Ideas (Firm)
• 15 CNN (Firm)
• 15 TV Only SAS (Firm)
• 13 Annenberg Learner (Firm)
• 13 Green Interview (Firm)
• 12 Australian Broadcasting Corporation (Firm)
• 11 Bloomberg LP
• 10 CINEFETE (Firm)
• 10 Camille S. DeBose (Firm)
• 10 MacNeil/Lehrer Productions (Firm)
• 10 National Geographic Digital Media (Firm)
• 9 BBC Worldwide Learning (Firm)
• 8 Collective Eye Films (Firm)
• 8 Mirror/Mirror Productions, Inc. (Firm)
• 8 Video Education America (VEA) (Firm)
• 7 National Geographic Society (U.S.)
• 6 Cerebellum Corporation (Firm)

• 1 Spanish

• 13 Earth (Planet)
• 6 Asia
• 5 United States
• 4 Africa, Sub-Saharan
• 4 North America
• 4 U.S. states
• 3 Africa
• 1 Antarctica
• 1 Australia
• 1 Central America
• 1 Fort Berthold Indian Reservation (N.D.)
• 1 Garrison Dam (N.D.)
• 1 Missouri River
• 1 Missouri River Watershed
• 1 North Dakota
• 1 Physical geography
• 1 South America
• 1 South Asia
• 1 Southeast Asia

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