TY  - BOOK
AU  - Ben-Porath,Yoram
AU  - Welch,Finis
ED  - Research and Development Corporation, 
TI  - Do sex preferences really matter?
T2  - The Rand paper series
PY  - 1975///
CY  - Santa Monica, California
PB  - Rand Corporation
KW  - Family size.
N1  - Includes bibliographical references
ER  -