TY  - BOOK
AU  - Yin,Robert K
AU  - Heald,Karen A.
ED  - Research and Development Corporation, 
TI  - Evaluating policy studies by using the case survey methods
T2  - The Rand paper series
PY  - 1975///
CY  - Santa Monica, California
PB  - Rand Corporation
KW  - Policy sciences
KW  - Bibliography
KW  - Methodology
N1  - Includes bibliographical references
ER  -