TY  - BOOK
AU  - Holmes, William M
TI  - Using propensity scores in quasi-experimental designs
U1  - 150.724 H739U 
PY  - 2014///
CY  - Los Angeles
PB  - Sage Publications
N1  - 1612 25/07/2014 KB132 28/07/2014 Main Budget
ER  -