TY  - BOOK
AU  - Wittrock,Björn
AU  - DeLeon,Peter
ED  - Research and Development Corporation, 
TI  - Policy as a moving target: a call for conceptual realism 
T2  - The Rand paper series
PY  - 0000///
CY  - Santa Monica, California
PB  - Rand Corporation
KW  - Policy sciences
N1  - Includes bibliographical references: pages 23-28
ER  -