TY  - BOOK
AU  - Rossi, Peter Henry,
AU  - Freeman, Howard Edgar.
TI  - Evaluation: a systematic approach 
SN  - 0803944586
U1  - 361.61072 ROS 
PY  - 1993///
CY  - London
PB  - Sage Publications
KW  - Evaluation research (Social action programs)
N1  - Includes bibliographical references and index
ER  -