• 3 Videos, Slides, Films

• 1 DVDs

• 3 Continental drift
• 3 Historical geology
• 3 History
• 2 Tsunamis
• 1 Asteroids
• 1 Collisions with Earth
• 1 Volcanoes

• 3 Johnson, Corey, 1961-
• 2 Hicklin, William
• 1 Arts and Entertainment Network
• 1 History (Television network)
• 1 Johnson, Kathryn (Director)
• 1 New Video Group
• 1 Pioneer Productions
• 1 Strange, Robert

• 3 English

• 3 Earth (Planet)
• 3 Pacific Area
• 2 San Andreas Fault (Calif.)
• 1 Alps
• 1 Atacama Desert (Chile)
• 1 Great Lakes (North America)
• 1 Hawaii
• 1 Iceland
• 1 Krakatoa (Indonesia)
• 1 Ness, Loch (Scotland)
• 1 New York (N.Y.)
• 1 Yellowstone National Park

• 1 Nature television programs
• 1 Nonfiction television programs
• 1 Science television programs
• 1 Television programs
• 1 Television series
• 1 Video recordings for the hearing impaired

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