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[ej-02-10]transgenic varieties and productivity of smallholder cotton farmers in china

作者：　　期刊： 　　来源：

作者：huang, jikun, ruifa hu, scott rozelle, fangbin qiao, and carl pray　　期刊：the australian journal of agricultural and resource economics, 46:3(2002): 367-387.　　来源： ccap