History 273,081 Politics and government 67,741 History and criticism 59,075 Social aspects 35,120 Social conditions 31,622 Philosophy 28,910 Criticism and interpretation 26,028 more ... Jazz 24,151 Economic conditions 20,318 Foreign relations 20,233 Women 19,779 Social life and customs 19,744 Piano music 19,119 Education 18,602 Study and teaching 18,582 Religious aspects 16,992 Law and legislation 16,419 Research 16,235 Political aspects 15,808 Operas 15,741 Motion pictures 14,390 African Americans 14,201 Symphonies 14,137 Music 13,790 Popular music 13,640 Christianity 13,335 Civilization 13,110 Management 12,477 Description and travel 12,376 Economic aspects 12,292 less ...