TY  - BOOK
AU  - Patton,Michael Quinn
TI  - Practical evaluation
SN  - 0803919042
AV  - H62 .P3217 1982
U1  - 001.433 
PY  - 1982///
CY  - Beverly Hills
PB  - Sage
KW  - Evaluation research (
KW  - Social action programs)
ER  -