• 5 Videos, Slides, Films

• 5 DVDs

• 3 Meteorology
• 3 Tornadoes
• 2 Ocean
• 2 Oceanography
• 2 Storm chasers
• 1 Adaptation (Biology)
• 1 Amphibians
• 1 Animal diversity
• 1 Animal migration
• 1 Animals
• 1 Aquatic ecology
• 1 Biodiversity
• 1 Biotic communities
• 1 Birds
• 1 Coasts
• 1 Deep-sea animals
• 1 Desert ecology
• 1 Elephants
• 1 Fishes
• 1 Floods
• 1 Forest ecology
• 1 Freshwater ecology
• 1 Habitat (Ecology)
• 1 Insects

• 3 Casey, Sean (Sean C.)
• 2 British Broadcasting Corporation
• 2 Discovery Communications, Inc
• 2 Fothergill, Alastair
• 2 Gaiam Americas, Inc
• 2 Krensel, Ronnie
• 2 Original Media
• 2 Tornado Alley LLC
• 2 Wurman, Joshua
• 1 Allan, Douglas
• 1 Aslett, Will
• 1 Attenborough, David, 1926-
• 1 Attenborough, Richard
• 1 BBC Video (Firm)
• 1 Bass, Karen
• 1 Beesley, Bradley
• 1 Berg, Julianne
• 1 Block, Lisa J.
• 1 Brosnan, Pierce
• 1 Carpenter, Nathan
• 1 Carroll, Michael (Narrator)
• 1 Cricchi, Jim
• 1 DeGruy, Michael, 1951-2012
• 1 Fenton, George

• 5 English

• 4 Great Plains
• 2 Middle West
• 2 United States
• 1 Alaska
• 1 Arctic regions
• 1 Botswana
• 1 British Columbia
• 1 China
• 1 Earth (Planet)
• 1 Hong Kong
• 1 Kalahari Desert
• 1 Okavango River Delta
• 1 Polar regions
• 1 Serengeti Plain
• 1 South Africa
• 1 Tanzania
• 1 Tropics

• 4 Documentary television programs
• 4 Video recordings for the hearing impaired
• 3 Science television programs
• 2 Television programs
• 1 Educational television programs
• 1 Nature television programs
• 1 Nonfiction television programs
• 1 Television mini-series
• 1 Television series
• 1 Wildlife television programs

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