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作者:McCullough, Ellen B.
关键词:Structural transformation;Sub-Saharan Africa;...
2 Land pressures, the evolution of farming systems, and development strategies in Africa: A synthesis [期刊论文]
来源:FOOD POLICY , 48卷 , 2014
作者:Jayne, T. S., Chamberlin, Jordan, Headey, Derek D.
关键词:Population density;Land;...