• 36 Videos, Slides, Films

• 16 Chemistry
• 14 Biology
• 12 Quantum theory
• 11 Discoveries in science
• 11 History
• 11 Research
• 10 Environmental sciences
• 9 Dynamics
• 9 Mechanics
• 9 Methodology
• 8 Experiments
• 8 Geology
• 8 Physical geography
• 5 Chemical elements
• 5 Chemistry, Physical and theoretical
• 5 Inorganic compounds
• 5 Mathematics
• 5 Organic compounds
• 5 Science
• 5 Vocational guidance
• 4 Anthropology
• 4 Astronomy
• 4 Crime

• 36 Films Media Group
• 36 Films for the Humanities & Sciences (Firm)
• 8 Cambridge Educational (Firm)
• 6 Video Education Australasia
• 4 Uniview Worldwide
• 3 BBC Worldwide Ltd
• 2 4 Learning (Firm)
• 2 Canadian Broadcasting Corporation
• 2 German United Distributors
• 2 La Compagnie des Taxi-Brousse
• 1 Allegro Productions (Firm)
• 1 Carolina Bioloical Supply Co
• 1 Filmoption International (Firm)
• 1 Goldhil Video (Firm)
• 1 Joy of Giving Something, Inc
• 1 Nobel Media AB (Firm)
• 1 Public Broadcasting Service (U.S.)
• 1 Standard Deviants (Performing group)

• 36 English

• 4 United States
• 2 Outer space
• 1 Russia

• 36 Educational films
• 36 Internet videos
• 26 Video recordings for the hearing impaired

Limit year range