TY  - BOOK
AU  - De Tray,Dennis N.
ED  - Research and Development Corporation, 
TI  - Child quality and the demand for children
T2  - The Rand paper series
PY  - 1972///
CY  - Santa Monica, California
PB  - Rand Corporation
KW  - Family size
KW  - Mathematical models
KW  - Fertility, Human
N1  - Includes bibliographical references: pages 38-41
ER  -