Estimating returns to education using twins in urban China ☆

☆ The authors thank the Editor and two anonymous r and suggestions, andNingMa, Junjian Yi andNing Zhang f that is described in this paper was initially supported by a Council of theHongKong Special Administrative Region (P thank NIHHD046144, NSFC70933001, and Tsinghua's financial support. Li also acknowledges support from NSF Award for Distinguished Young… CONTINUE READING