Agriculture Economic aspects 527 History 258 Economic conditions 115 Agriculture and state 90 Land tenure 76 Food supply 65 more ... Rural conditions 64 Peasants 63 Social conditions 55 Rural development 29 Social aspects 28 Environmental aspects 26 Politics and government 25 Social life and customs 24 Antiquities 23 Agricultural laborers 21 Description and travel 21 Land reform 21 Land use 21 Produce trade 18 Societies, etc 18 Food 17 Agricultural innovations 16 Country life 16 Industries 16 Origin 16 Farmers 15 Population 15 Farm life 14 less ...