1 Center for Population and Development Studies and Institute of Gerontology,Renmin University of China;2 Department of Demography,Renmin University of China
Online:2016-07-29
Published:2016-09-23
About author:Yang Juhua is Professor,Center for Population and Development Studies and Institute of Gerontology,Renmin University of China. Zhang Jiaojiao is PhD Student,Department of Demography,Renmin
University of China