Congresses 616 History 485 Politics and government 284 Economic conditions 280 Social conditions 232 Civilization 178 History and criticism 173 Mais ... Economic policy 167 Economic integration 153 Relations 152 Women 147 Foreign relations 127 Education 120 Social aspects 113 Foreign economic relations 97 Indians 87 Social policy 85 Democracy 82 Economic aspects 80 Latin American literature 68 Human rights 66 Research 64 Study and teaching 62 Economic development 59 Motion pictures 57 Education, Higher 56 Emigration and immigration 56 Government policy 56 Commerce 55 Indians of South America 55 menos ...