History 208,539
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Politics and government 67,983
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Law and legislation 58,470
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Foreign relations 29,320
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Social conditions 28,156
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History and criticism 27,872
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Government policy 24,205
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Economic conditions 22,896
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Social life and customs 20,275
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Social aspects 18,576
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Finance 16,817
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Prevention 13,652
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Economic aspects 13,327
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Appropriations and expenditures 12,969
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Women 12,817
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Education 12,060
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Constitutional law 11,676
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Political aspects 11,165
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Civilization 11,045
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African Americans 10,637
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Biography 10,355
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Management 10,324
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Description and travel 10,040
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Legal status, laws, etc 9,851
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Race relations 9,354
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Economic policy 9,125
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World War, 1939-1945 8,775
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Antiquities 8,372
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Indians of North America 8,154
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Intellectual life 8,078
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Taxation 7,905
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Research 7,851
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Environmental aspects 7,183
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Study and teaching 7,053
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Evaluation 6,952
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Presidents 6,909
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National security 6,659
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Armed Forces 6,546
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Criticism and interpretation 6,411
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Church history 6,370
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Rules and practice 6,253
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Law 6,247
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Civil rights 6,134
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Emigration and immigration 6,118
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Medical care 6,066
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Ethnic relations 5,677
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Commerce 5,676
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Religion 5,655
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Officials and employees 5,650
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Jews 5,594
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Religious aspects 5,495
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Relations 5,267
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Music 5,169
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Foreign economic relations 5,162
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Services for 4,949
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Employment 4,889
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Terrorism 4,802
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Influence 4,763
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Political activity 4,715
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Campaigns 4,668
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Slavery 4,579
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Constitutional history 4,406
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In literature 4,374
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Small business 4,354
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Constitutions 4,352
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Historiography 4,084
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English literature 4,034
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States 4,024
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Elections 3,989
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Constitutional amendments 3,965
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American literature 3,958
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Colonies 3,909
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Technological innovations 3,890
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Agriculture 3,882
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Security measures 3,845
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Motion pictures 3,841
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Philosophy 3,788
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History, Military 3,727
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Geology 3,713
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Planning 3,708
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Popular music 3,708
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Veterans 3,705
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Procurement 3,686
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Democracy 3,647
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Public opinion 3,586
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Military policy 3,584
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Pollution 3,529
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Older people 3,480
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Safety measures 3,413
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Women and literature 3,403
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International cooperation 3,328
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Economic development 3,323
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Excavations (Archaeology) 3,304
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World War, 1914-1918 3,288
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Water-supply 3,260
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Theater 3,247
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Families 3,245
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Children 3,169
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Nationalism 3,141
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Universities and colleges 3,128
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