Economic conditions Social conditions 1.142 Economic policy 909 Politics and government 759 History 640 Periodicals 437 Statistics 345 Industries 303 Commerce 268 Economic development 167 Economic aspects 165 Economics 159 Congresses 144 Foreign economic relations 136 Agriculture 134 Regional planning 134 Mathematical models 114 Economic history 111 Finance 92 Description and travel 91 Working class 87 Population 81 Economic forecasting 79 Capitalism 76 Natural resources 67 Land use 65 Foreign relations 63 Labor supply 62 Case studies 56 Investments, Foreign 55