TY  - BOOK
AU  - Trochim,William M.K.
TI  - Research design for program evaluation: the regression-discontinuity approach 
SN  - 0803920377
U1  - 300.1 
PY  - 1984///
CY  - Beverly Hills
PB  - Sage Publications
KW  - Social sciences
KW  - Methodology
KW  - Regression analysis
KW  - Evaluation research (Social action programs)
ER  -