TY  - BOOK
AU  - Walker,Warren E.
ED  - Research and Development Corporation, 
TI  - The generation and screening of alternatives in policy analysis
T2  - The Rand paper series
PY  - 1987///
CY  - Santa Monica, California
PB  - Rand Corporation
KW  - Policy sciences
N1  - Includes bibliographical references: pages 37-39
ER  -