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Water management and crop production for food security in China: A review[J] . Shahbaz Khan,Munir A. Hanjra,Jianxin Mu.Agricultural Water Management . 2008 (3)
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Off-farm work and capital accumulation decisions of farmers over the life-cycle: the role of heterogeneity and state dependence[J] . Avner Ahituv,Ayal Kimhi.Journal of Development Economics . 2002 (2)