TY  - BOOK
AU  - Bongaarts ,John .
AU  - Burch ,Thomask .
AU  - Wachter ,Kenneth W .
TI  - Family demography / 
T2  - International Studies in Demography, 
U1  - Y,2;5  
PY  - 1987///
CY  - Oxford  : 
PB  - Clarendon Press , 
KW  - DEMOGRAPHY
N1  - NULL
ER  -