History 229 Education 161 Law and legislation 140 Economic conditions 123 Politics and government 114 Foreign relations 111 Study and teaching 82 more ... Relations 64 Industries 61 Social conditions 61 Economic forecasting 59 Emigration and immigration 59 Taxation 57 Statistics 56 Finance 54 Social aspects 54 United States 47 History and criticism 46 Universities and colleges 46 Education, Higher 44 Historia 44 Research 44 Droit 43 UNITED STATES 42 Zeitschrift 42 Commerce 41 Estados Unidos 41 Economic history 40 Law 39 Economic aspects 38 less ...