• 11 Videos, Slides, Films

• 5 Social aspects
• 4 Technology and civilization
• 2 Digital media
• 2 Edison, Thomas A. (Thomas Alva), 1847-1931
• 2 Photography
• 2 Science
• 2 Television
• 1 Aerodynamics
• 1 Aeronautics
• 1 Agricultural machinery
• 1 Agriculture
• 1 Air conditioning
• 1 Airplanes
• 1 Applied mathematics
• 1 Biomedical engineering
• 1 Biomedical materials
• 1 Chemistry
• 1 Cinematography
• 1 Cognitive psychology
• 1 Design and construction
• 1 Dynamics
• 1 Gunpowder
• 1 Harvesting

• 11 Films Media Group
• 11 Films for the Humanities & Sciences (Firm)
• 3 Looking Glass Pictures
• 1 Infobase
• 1 Journeyman Pictures (Firm)
• 1 Open University
• 1 Video Education Australasia

• 11 English

• 1 United States

• 11 Internet videos
• 1 Biography

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