1 China Population Information and Research Center (CPIRC), Beijing 100081; 2 China Population Information and Research Center (CPIRC), Beijing 100081;3 Hunan Provincial Family Planning Commission, Hunan 410000
Online:1998-01-29
Published:2013-03-10
About author:1 Director of China Population Information and Research Center (CPIRC) ; 2 Ph.D. in demography, research associate of CPIRC ; 3 Works in Hunan Provincial Family Planning Commission