• 23 Videos, Slides, Films

• 19 Marine organisms
• 18 Marine biology
• 11 Ocean life
• 11 Physical geography
• 9 Biotic communities
• 9 Ecosystem management
• 9 Pollution
• 8 Water
• 7 Ecology
• 6 Air
• 6 Climatic changes
• 6 Environmental aspects
• 5 Land use
• 4 Biodiversity
• 4 Biodiversity conservation
• 4 Biogeography
• 4 Biosphere
• 4 Effect of human beings on
• 4 Human ecology
• 4 Nature
• 4 Oceanography
• 4 Population
• 4 Research
• 4 Toxicology

• 23 Films Media Group
• 23 Films for the Humanities & Sciences (Firm)
• 4 Ampersand Film & Video Tape Productions
• 3 Allegro Productions (Firm)
• 2 National Film Board of Canada
• 1 Alda, Alan, 1936-
• 1 American Museum of Natural History
• 1 Cambridge Educational (Firm)
• 1 Canadian Broadcasting Corporation
• 1 Electric Sky (Firm)
• 1 Europe Images International
• 1 Information Television Network
• 1 Journeyman Pictures (Firm)
• 1 New Atlantis (Firm)
• 1 Public Broadcasting Service (U.S.)
• 1 System TV (Firm)
• 1 TV 2 (Denmark)

• 23 English

• 2 Australia
• 2 Oceania
• 1 Djibouti
• 1 Everglades National Park (Fla.)
• 1 Southeast Asia

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