Produce trade Agriculture 36 Economic aspects 23 Agriculture and state 21 Farm produce 19 Commerce 18 Marketing 17 Food industry and trade 14 Government policy 14 Commercial policy 9 Food supply 9 Agricultural prices 7 Congresses 7 Statistics 7 Periodicals 6 Case studies 5 History 5 Forecasting 4 International economic relations 4 Agricultural industries 3 Agricultural productivity 3 Agriculture, Cooperative 3 Commodity control 3 Foreign economic relations 3 Free trade 3 Law and legislation 3 Tariff on farm produce 3 Agricultural estimating and reporting 2 Cottage industries 2 Crop yields 2