• 31 Videos, Slides, Films

• 31 Mantle
• 17 Geology
• 16 Crust
• 16 Earth (Planet)
• 16 Earth sciences
• 16 Lithosphere
• 16 Physical geology
• 11 Natural resources
• 6 Environmental aspects
• 6 Landforms
• 6 Power resources
• 5 Energy consumption
• 5 Energy development
• 5 Internal structure
• 5 Management
• 4 Earth currents
• 4 Geodynamics
• 4 Physical geography
• 3 Chemical elements
• 3 Chemistry, Physical and theoretical
• 3 Effect of human beings on
• 3 Geography
• 3 Human ecology
• 3 Hydrology

• 31 Films Media Group
• 16 Infobase
• 15 Films for the Humanities & Sciences (Firm)
• 3 Allegro Productions (Firm)
• 3 Cambridge Educational (Firm)
• 3 National Geographic Society (U.S.)
• 3 PBS (Firm)
• 2 Granada Media (Firm)
• 2 Inside Science (Firm)
• 2 Palomar Community College District (Firm)
• 1 A&E Networks (Firm)
• 1 ABC International
• 1 BBC Worldwide Americas, Inc
• 1 Bloomberg LP
• 1 Canadian Broadcasting Corp. (Firm)
• 1 Cerebellum Corporation (Firm)
• 1 EBS Trust (Firm)
• 1 Ethical Markets Media
• 1 National Geographic Television & Film
• 1 TMW Media Group (Firm)
• 1 Video Education America (VEA) (Firm)
• 1 Video Education Australasia
• 1 Visual Education Centre

• 31 English

• 15 Earth (Planet)
• 1 Middle East

• 21 Video recordings for the hearing impaired
• 15 Educational films
• 15 Videorecording

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