• 6 Videos, Slides, Films

• 6 Historical geology
• 6 Physical geography
• 2 Geology
• 1 Asteroids
• 1 Collisions with Earth
• 1 Glacial epoch
• 1 Great Lakes (North America)

• 6 Films Media Group
• 6 Films for the Humanities & Sciences (Firm)
• 2 Infobase

• 6 English

• 1 Arizona
• 1 Canada
• 1 Grand Canyon (Ariz.)
• 1 Ness, Loch
• 1 Ness, Loch (Scotland)
• 1 New York
• 1 New York (State)
• 1 North America
• 1 Scotland
• 1 Solar system
• 1 United States

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

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