• 10 Videos, Slides, Films

• 10 Climatic changes
• 10 Ecosystem management
• 10 Pollution
• 7 Ecology
• 7 Marine biology
• 5 Marine ecology
• 5 Marine organisms
• 4 Atmosphere
• 4 Biodiversity
• 4 Biotic communities
• 4 Population
• 4 Weather
• 2 Climatology
• 2 Oceanography
• 2 Tara (Yacht)
• 2 Water
• 1 Biodiversity conservation
• 1 Biosphere
• 1 Conservation of natural resources
• 1 Economic aspects
• 1 Environmental aspects
• 1 Environmental protection
• 1 Hydrology

• 10 Films Media Group
• 4 Ampersand Film & Video Tape Productions
• 1 CCI Releasing, Inc
• 1 Cambridge Educational (Firm)
• 1 MacNeil/Lehrer Productions
• 1 Video Education Australasia

• 10 English

• 10 Educational films
• 10 Internet videos
• 10 Videorecording
• 2 Video recordings for the hearing impaired

Limit year range