TY  - BOOK
AU  - Berk, Richard A.
AU  - Rossi, Peter H. 
TI  - Thinking about program evaluation
SN  - 0-8039-3705-9
U1  - 361.6 BER-; 
PY  - 1990///
CY  - Newbury Park
PB  - Sage Publications
KW  - Social sciences - Research
KW  - Evaluation research (Social action programs) - Utilization
ER  -