• 3 Videos, Slides, Films

• 3 Biology
• 3 Environmental sciences
• 3 Geology
• 3 Methodology
• 3 Study and teaching
• 3 Vocational guidance
• 2 Anthropology
• 2 Applied mathematics
• 2 Chemistry
• 2 Crime
• 2 Experiments
• 2 Physics
• 2 Politics and government
• 2 Psychology
• 2 Social control
• 2 Sociology
• 2 Technology
• 1 Anatomy
• 1 Engineering
• 1 Human geography
• 1 Physiology

• 3 Films Media Group
• 3 Films for the Humanities & Sciences (Firm)
• 2 Uniview Worldwide
• 1 Cambridge Educational (Firm)

• 3 English

• 2 United States

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