History 664 Politics and government 230 History and criticism 156 Criticism and interpretation 127 Philosophy 114 Social aspects 110 Social conditions 96 more ... Education 84 Study and teaching 76 Research 71 Political aspects 63 Women 55 Education, Higher 51 Economic conditions 48 Social life and customs 42 Civilization 41 Economic aspects 41 Emigration and immigration 41 Historiography 41 Methodology 38 Political science 36 Democracy 35 Law and legislation 35 Spanish literature 35 Training of 35 Spanish language 30 Foreign relations 29 Nationalism 28 Art 27 Indians of South America 27 less ...