Economic conditions -- Politics and government -- 37 Social conditions -- 15 History -- 8 Economic forecasting -- 6 Periodicals 5 Periodicals -- 5 more ... Congresses -- 4 Forecasting -- 4 Foreign relations -- 4 Congresses 3 Foreign relations 2 History 2 Social conditions 2 20th century 1 Biography -- 1 China -- 1 Civilization 1 Civilization -- 1 Colonies -- 1 Description and travel -- 1 Directories 1 Economic assistance -- 1 Economic conditions 1 Economic development 1 Economic integration 1 Economic policy 1 Encyclopedias 1 Ethnicity -- 1 Forecasting 1 less ...