TY  - BOOK
AU  - Langbein, Laura
TI  - Public program evaluation : a statistical guide
SN  - 9780765626127
U1  - 352.35 
PY  - 2012///
CY  - London
PB  - Routledge
KW  - Policy sciences--Statistical methods
KW  - Evaluation research (Social action programs)--Statistical methods
ER  -