TY  - BOOK
AU  - Mohr Lawrence B
TI  - Impact analysis for program evaluation
SN  - 0803949812
U1  - 361.61068 
PY  - 1992///
CY  - London
PB  - SAGE Publications
KW  - Evaluation research (Social action programs)
KW  - Policy science
N1  - Includes bibliography and index
ER  -