Agriculture Economic aspects 611 History 256 Economic conditions 137 Agriculture and state 78 Home economics 65 Land tenure 54 more ... Industries 53 Rural conditions 48 Peasants 40 Economics 32 Farm management 32 Social conditions 32 Accounting 27 Commerce 26 Aspect économique 24 Land use 24 Forests and forestry 23 Almanacs, German 22 Economic policy 22 Research 21 Taxation 21 Agricultural laborers 20 Roads 20 Social aspects 20 Food supply 18 Description and travel 17 Farm produce 15 Farms 15 Land reform 15 less ...