History 961 Politics and government 141 Economic conditions 122 Sources 116 History and criticism 112 Social conditions 59 Foreign relations 46 Biography 41 Indians of South America 37 Spanish literature 31 Colonies 29 Church history 28 Civilization 27 Working class 27 Description and travel 25 Historiography 25 Missions 25 Theater 25 Spanish American literature 24 Constitutional history 23 Spanish language 23 Bibliography 22 Education 21 Antiquities 20 Discovery and exploration 20 Trade-unions 19 Periodicals 18 Natural history 17 War of Independence, 1810-1823 17 Agriculture 16