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Agriculture History Histoire 4 Agrarökologie 1 Agricultural ecology 1 Agricultural laws and legislation 1 Agricultural policies and programs 1 more ... Agriculture and state 1 Aspect économique 1 Aspect social 1 Bewässerungswirtschaft 1 Colonisation intérieure 1 Conditions rurales 1 Conservation 1 Eau d'irrigation 1 Economic aspects 1 Écologie agricole 1 Geschichte 1 Grundwasserstrom 1 Irrigation 1 Irrigation water 1 Land settlement 1 Land use 1 Politique agricole 1 Rural conditions 1 Social aspects 1 Soil conservation 1 Sols 1 State universities and colleges 1 Utilisation du sol 1 less ...

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