• 5 Mathematics
• 5 Study and teaching
• 5 Vocational guidance
• 4 Biology
• 4 Chemistry
• 4 History
• 3 Engineering
• 3 Research
• 3 Technology
• 2 Anthropology
• 2 Applied mathematics
• 2 Crime
• 2 Discoveries in science
• 2 Environmental sciences
• 2 Experiments
• 2 Geology
• 2 Methodology
• 2 Physical geography
• 2 Politics and government
• 2 Psychology
• 2 Quantum theory
• 2 Social control
• 2 Sociology

• 8 Films Media Group
• 2 Uniview Worldwide
• 1 Cambridge Educational (Firm)
• 1 Electric Sky (Firm)
• 1 Joy of Giving Something, Inc
• 1 Media Rich Learning (Firm)
• 1 Nobel Media AB (Firm)

• 8 English

• 2 United States
• 1 Europe

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