TY  - BOOK
AU  - ZHENG Liu, and ohters
TI  - China's population :  Problems and prospects   
T2  - China studies series
U1  - Y:5.41.N81, M1/SC 
PY  - 1981///
CY  - China
PB  - New world         
N1  - Appendix : 169-170P
ER  -