• 20 Videos, Slides, Films

• 18 Atmosphere
• 17 Air
• 17 Climatic changes
• 15 Ecosystem management
• 10 Human ecology
• 8 Effect of human beings on
• 8 Nature
• 6 Climatology
• 6 Conservation of natural resources
• 5 Diseases
• 4 Environmental aspects
• 4 Lungs
• 4 Physical geography
• 4 Respiratory organs
• 4 Respiratory tract diseases
• 4 Toxicology
• 4 Water
• 3 Ecology
• 3 Environmental geography
• 3 Environmental protection
• 3 Human geography
• 3 Refuse and refuse disposal
• 3 Waste disposal

• 20 Films Media Group
• 4 DR TV (Television station : Copenhagen, Denmark)
• 2 4 Learning (Firm)
• 2 ABC News Productions
• 1 ABC International
• 1 Academic Media (Firm)
• 1 Allegro Productions (Firm)
• 1 BBC Worldwide Ltd
• 1 CCI Releasing, Inc
• 1 Cambridge Educational (Firm)
• 1 Clean Air Awareness Films
• 1 MasterSource
• 1 Québec/Amérique International
• 1 Video Education Australasia
• 1 Von Cramon, Benjamin

• 20 English
• 2 Multiple languages

• 2 Bangladesh
• 2 South Asia

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