• 781 Videos, Slides, Films

• 171 Technological innovations
• 170 History
• 141 Social aspects
• 119 Science
• 115 Study and teaching
• 88 Information technology
• 62 Mathematics
• 61 Cyberspace
• 61 Information society
• 59 Engineering
• 55 Social change
• 52 Future, The
• 51 Vocational guidance
• 44 Educational technology
• 41 Power resources
• 41 Telecommunication
• 40 Industrial applications
• 39 Communication
• 38 Sociology
• 36 Technology and civilization
• 35 Digital media
• 33 Business
• 33 Transportation
• 32 Economics

• 642 Films Media Group
• 341 Films for the Humanities & Sciences (Firm)
• 331 Infobase
• 96 Alexander Street Press
• 40 Video Education Australasia
• 34 TVF International (Firm)
• 31 PBS (Firm)
• 29 Parthenon Entertainment (Firm)
• 22 Cerebellum Corporation (Firm)
• 18 CNN (Firm)
• 17 Intelligence Squared US (Firm)
• 17 Public Broadcasting Service (U.S.)
• 17 Roberts, Paul
• 16 Looking Glass Pictures
• 16 Van Dorslar, Marianne
• 16 World Wide Entertainment (Firm)
• 15 Avenue Education (Firm)
• 14 Media 4 Math (Firm)
• 13 Media4Math
• 12 Edizioni Ampersand
• 11 Illumina Digital
• 11 National Geographic Society (U.S.)
• 10 ABC News Productions
• 10 Bloomberg LP
• 10 EBS Trust (Firm)

• 774 English
• 7 Unknown
• 2 Multiple languages

• 59 Great Britain
• 27 United States
• 9 Africa, Sub-Saharan
• 5 China
• 5 West (U.S.)
• 4 Japan
• 4 Outer space
• 3 Africa
• 3 Asia
• 3 India
• 3 U.S. states
• 2 Developing countries
• 2 Europe
• 2 Korea
• 2 Zambia
• 1 Earth (Planet)
• 1 Egypt
• 1 Former Soviet republics
• 1 Germany
• 1 Hiroshima-shi
• 1 Los Angeles (Calif.)
• 1 Malawi
• 1 South Asia
• 1 Southeast Asia
• 1 Tanzania

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