History 190 History and criticism 113 General 100 Criticism and interpretation 47 Social aspects 47 Politics and government 45 SOCIAL SCIENCE 45 Study and teaching 41 BUSINESS & ECONOMICS 40 Reference 40 POLITICAL SCIENCE 31 Antiquities 29 Economic conditions 29 HISTORY 29 Histoire 29 Philosophy 29 Congresses 28 Research 27 Social conditions 27 Spanish literature 26 TECHNOLOGY & ENGINEERING 25 LITERARY CRITICISM 24 Spanish language 24 Emigration and immigration 22 Political aspects 22 Civilization 20 Historiography 20 Informatique 20 Excavations (Archaeology) 19 Religious aspects 19