TY  - BOOK
AU  - Chelimsky, Eleanor1
AU  - Shadish, William R. 
TI  - Evaluation for the 21st century: a resource book 
SN  - 0-7619-0610-x
U1  - 001.4 210
PY  - 1997///
CY  - London
PB  - SAGE
KW  - Evaluation research(Social action programs)1
ER  -