Subject
United States Foreign relations
83
United States Politics and government
53
United States History
50
World War, 1939-1945
34
Presidents
16
United States History Study and teaching
16
World politics
13
China Foreign relations
8
Soviet Union Foreign relations
8
History
6
Cold War
5
Anti-communist movements History
4
Communism
4
Intelligence service History
4
Korea Foreign relations
4
World War, 1939-1945 Diplomatic history
4
Communism History
3
Generals
3
Great Britain Foreign relations
3
National security
3
Public opinion
3
United States Relations
3
Air defenses History
2
Air power History
2
Asia Foreign relations
2
Asia, Eastern Foreign relations
2
Atomic bomb
2
Cold War History
2
Democracy
2
Diplomats
2
Europe Politics and government
2
Far East History
2
Internal security
2
Internal security History
2
Israel Foreign relations
2
Mass media and culture
2
Middle East Foreign relations
2
Political and social views
2
Reconstruction (1939-1951)
2
Russia Foreign relations
2
Sports
2
Statesmen
2
Subversive activities History
2
United States Civilization
2
United States Economic policy
2
United States Foreign public opinion
2
United States Politics and government Sources
2
United States Relaciones exteriores
2
Vice-presidents
2
Africa Foreign relations
1
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