TY  - BOOK
AU  - Rossi,Peter H.
AU  - Freeman,Howard E.
TI  - Evaluation : a systematic approach
AV  - H62 R677E 1993
PY  - 1993///
CY  - Newbury Park, Calif.
PB  - Sage
KW  - EVALUATION RESEARCH (SOCIAL ACTION PROGRAMS)
ER  -