• 21 Videos, Slides, Films

• 20 Biology
• 10 Technology
• 7 Social aspects
• 6 Science
• 5 Medicine
• 4 Forecasting
• 2 Aging
• 2 Physiology
• 1 Anatomy
• 1 Arsenic
• 1 Arsenic content
• 1 Artificial limbs
• 1 Artificial organs
• 1 Bats
• 1 Biochemistry
• 1 Brain
• 1 Career development
• 1 Cultural geography
• 1 Cyberspace
• 1 Diseases
• 1 Drinking water
• 1 Electrical and Electronic Equipment
• 1 Endangered species

• 21 Films Media Group
• 9 Parthenon Entertainment (Firm)
• 1 Fred Friendly Seminars (Firm)
• 1 Infobase
• 1 MacNeil/Lehrer Productions
• 1 Public Broadcasting Service (U.S.)

• 21 English

• 1 Ghana
• 1 United States

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