• 7 Sociology
• 4 Cities and towns
• 4 Communication
• 4 Population
• 3 Mass media
• 3 Population policy
• 3 Rural-urban migration
• 3 Social ecology
• 3 Technological innovations
• 3 Technology
• 3 Urbanization
• 2 Culture
• 2 Digital media
• 2 Information technology
• 2 Social structure
• 1 African Americans
• 1 Collective behavior
• 1 Economics
• 1 English language
• 1 Environmental aspects
• 1 Globalization
• 1 History and criticism

• 7 Infobase
• 3 Films for the Humanities & Sciences (Firm)
• 1 3DD Entertainment (Firm)
• 1 American Public Television
• 1 Filmhub (Firm)
• 1 Juno Films (Firm)
• 1 MacNeil/Lehrer Productions
• 1 NC State University (Firm)
• 1 Nick Jordan (Firm)
• 1 ORF (Firm)
• 1 Public Broadcasting Service (U.S.)
• 1 TVF International (Firm)

• 4 United States
• 1 Europe

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