Congresses 556 History 261 Politics and government 180 Economic conditions 165 Social conditions 131 Economic integration 117 Economic policy 112 more ... History and criticism 92 Civilization 91 Women 89 Education 78 Relations 69 Democracy 63 Foreign economic relations 63 Foreign relations 58 Social policy 58 Social aspects 56 Economic aspects 52 Indians 50 Latin American literature 43 Human rights 38 Social security 37 Economic development 36 Government policy 36 Study and teaching 36 Indians of South America 35 Agriculture 34 Education, Higher 33 Emigration and immigration 32 Research 32 less ...