• 3 Videos, Slides, Films

• 1 Description and travel
• 1 Geomorphology
• 1 Historical geology
• 1 History
• 1 Mountains
• 1 Paleontology
• 1 Physical geography
• 1 Plate tectonics
• 1 Volcanoes

• 1 Dallas County Community College District
• 1 Encyclopaedia Britannica, Inc.
• 1 Films Media Group
• 1 Films for the Humanities & Sciences (Firm)
• 1 Leonard, Melinda
• 1 Rafferty, John P.

• 3 English

• 2 Arizona
• 1 Everest, Mount (China and Nepal)
• 1 Grand Canyon
• 1 Mariana Trench
• 1 Mauna Kea (Hawaii)

• 1 Documentary films
• 1 Internet videos
• 1 Short films
• 1 Video recordings for the hearing impaired
• 1 Videorecording

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