TY  - BOOK
AU  - Rossi, Peter H.
AU  - Freeman, Howard E.
TI  - Evaluation- a systematic approach
SN  - 0-7619-0893-5
U1  - 303.832 
PY  - 1998///
CY  - London
PB  - Sage
KW  - Evaluation research(social action programs)
N1  -  RUDAT
ER  -