• 4 Anthropology
• 4 Biodiversity
• 4 Biology
• 4 Biotic communities
• 4 Chemistry
• 4 Cities and towns
• 4 Crime
• 4 Ecological regions
• 4 Ecology
• 4 Experiments
• 4 Geology
• 4 Methodology
• 4 Physical geography
• 4 Physics
• 4 Politics and government
• 4 Population
• 4 Psychology
• 4 Research
• 4 Social change
• 4 Social control
• 2 Applied mathematics
• 2 Mathematics

• 8 Films Media Group
• 4 Films for the Humanities & Sciences (Firm)
• 4 Infobase
• 4 Media Policy Center (Firm)
• 4 Uniview Worldwide

• 8 English

• 4 United States

Limit year range