Economic aspects 1,235 Agriculture 1,220 History 257 Agriculture and state 203 Economic conditions 185 Rural conditions 88 Food supply 80 更多 ... Peasants 62 Rural development 59 Land tenure 56 Agricultura 52 Social conditions 50 Environmental aspects 48 Agricultural industries 44 Produce trade 40 Economic development 39 Social aspects 39 Politics and government 38 Agricultural productivity 34 Sustainable agriculture 34 Aspectos economicos 32 Farmers 31 Food industry and trade 29 Land reform 29 Government policy 26 Economic policy 25 Commerce 24 Agricultural innovations 23 Farms, Small 22 Land use, Rural 22 少 ...