TY  - BOOK
AU  - Pawson,Ray and Tilley,Nick
TI  - Realistic evaluation 
SN  - 0761950087
U1  - 001.4 21
PY  - 1997///
CY  - London
PB  - Sage Publications
KW  - Realistic evaluation
N1  - Includes bibliographical references and index
ER  -