共 42 条
[31]
Liu YL, 2004, B WORLD HEALTH ORGAN, V82, P532
[33]
ROSENZWEIG MR, 1986, AM ECON REV, V76, P470
[34]
Scharping T., 2003, Birth Control in China 1949-2000
[35]
Schultz T., 1976, EC FACTORS POPULATIO
[36]
Scrimshaw NS, 1997, AM J CLIN NUTR, V66, P464
[39]
*UNICEF, 1990, 19901EICEF1990L6 UNI
[40]
Wang Zhihong, 2007, Wei Sheng Yan Jiu, V36, P82