Subject
History
47
Philosophy
42
Law
8
Education
7
Social sciences
6
Political science
5
Government policy
4
Influence
4
Intellectual life
4
Medicine
4
Science
4
Social aspects
4
Cold War
3
History and criticism
3
Interpretation and construction
3
Political aspects
3
Political culture
3
Politics and government
3
Study and teaching
3
Agent (Philosophy)
2
Air power
2
Air warfare
2
American literature
2
Anarchism
2
Civilization
2
Democracy
2
Diseases in literature
2
Economic assistance, American
2
Economic conditions
2
Economic development
2
Educators
2
Experimental methods
2
Jurisprudence
2
Landscape architecture
2
Liberalism
2
Liberty
2
Literature and medicine
2
Medical literature
2
Military policy
2
Minorities
2
National characteristics, American
2
Norm (Philosophy)
2
Nuclear warfare
2
Nuclear weapons
2
Policy scientists
2
Political activity
2
Political and social views
2
Progressive education
2
Protestantism
2
Race
2
more ...