TY  - BOOK
AU  - Jian Song
AU  -  Jingyuan Yu
TI  - Population system control
SN  - 0387182888
U1  - Y:5:(B).41.N8, M8 
PY  - 1988///
CY  - Beijing
PB  - Springer Verlag         
KW  - Family Planning
N1  - Bibliography chapterwise
ER  -