• 56 Reproduction
• 55 Animal behavior
• 13 Ethnicity
• 13 Multiculturalism
• 12 Biodiversity
• 12 Evolution (Biology)
• 11 Criminal behavior
• 11 Ecosystem management
• 11 Physical geography
• 11 Social structure
• 10 Juvenile delinquency
• 10 Prevention
• 10 Social work with criminals
• 10 Social work with juvenile delinquents
• 9 Biosphere
• 9 Biotic communities
• 9 Corrections
• 9 Criminal justice, Administration of
• 9 Deviant behavior
• 9 History
• 9 Human ecology
• 9 Rites and ceremonies
• 9 Social control
• 8 Research
• 7 Archaeology

• 158 Films Media Group
• 158 Films for the Humanities & Sciences (Firm)
• 69 Infobase

• 158 English

• 8 United States
• 6 South America
• 3 Alaska
• 3 Central America
• 3 Hawaii
• 3 Latin America
• 2 Australia
• 2 Burma
• 2 China
• 2 Europe
• 2 Mexican-American Border Region
• 2 Mexico
• 2 Middle East
• 2 Yellowstone National Park
• 1 Andes Region
• 1 Argyle, Lake (W.A.)
• 1 Arkansas
• 1 Asia
• 1 Blue Nile River (Ethiopia and Sudan)
• 1 Botswana
• 1 Earth (Planet)
• 1 Easter Island
• 1 Egypt
• 1 Florida Keys (Fla.)
• 1 Former Soviet republics

Limit year range