History 544 Politics and government 235 Education 218 Education and state 214 Economic conditions 169 Historia 159 Law and legislation 152 Mais ... Church and state 131 State, The 121 Foreign relations 113 Estado 87 Social conditions 84 Social aspects 76 Education, Higher 72 Political science 71 Economic aspects 70 Study and teaching 70 Relations 69 Emigration and immigration 68 Industries 65 Universities and colleges 64 Política y gobierno 63 History and criticism 62 Economic forecasting 60 Statistics 59 Taxation 59 Finance 58 Commerce 57 Educación 54 Research 54 menos ...