TY  - BOOK
AU  - Butz,William P.
AU  - Ward,Michael Paul
ED  - Research and Development Corporation, 
TI  - Countercyclical U.S. fertility and its implications
T2  - The Rand paper series
PY  - 1978///
CY  - Santa Monica, California
PB  - Rand Corporation
KW  - Fertility, Human
KW  - United States.
KW  - Family size
KW  - United States
N1  - Includes bibliographical references
ER  -