History 153 Politics and government 95 Economic conditions 74 Social conditions 73 Civilization 54 Education 42 Social sciences 38 Economic history 37 History and criticism 36 History of the Americas 31 Latin America 31 Sociology 29 Historia 28 Research 26 Economic policy 25 PUBLICACIONES PERIODICAS 25 Social aspects 24 Foreign relations 23 Economic development 22 Democracy 21 Catholic Church 20 Economic forecasting 19 Law 18 Study and teaching 18 Ethnology 17 Philosophy 17 Sociología 17 Economics 16 Anthropology 15 Business & Economics 15