• 18 Videos, Slides, Films

• 1 DVDs

• 13 Quantum theory
• 11 Cosmology
• 7 Study and teaching
• 6 Biology
• 6 Chemistry
• 5 Environmental sciences
• 5 Experiments
• 5 Geology
• 5 Methodology
• 5 Physical geography
• 4 Anthropology
• 4 Crime
• 4 Politics and government
• 4 Psychology
• 4 Social control
• 4 Sociology
• 3 Mathematics
• 3 Science
• 3 Vocational guidance
• 2 Applied mathematics
• 2 Discoveries in science
• 2 History
• 2 Medicine

• 17 Films Media Group
• 10 Annenberg Learner (Firm)
• 7 Films for the Humanities & Sciences (Firm)
• 4 Uniview Worldwide
• 1 Annenberg Media
• 1 Cambridge Educational (Firm)
• 1 Harvard University. Physics Department
• 1 Harvard-Smithsonian Center for Astrophysics. Science Media Group
• 1 La Compagnie des Taxi-Brousse
• 1 Nobel Media AB (Firm)

• 18 English

• 4 United States

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