[EJ-15-49] When will we ever learn ... to change policy: current state of impact evaluation

作者：　　期刊： 　　来源：

作者：Shi, Yaojiang, Linxiu Zhang, Scott Rozelle　　期刊：Journal of Development Effectiveness, Vol. 7, No. 4 (2015): 402-422.　　来源： ccap