TY  - JOUR
A1  - Morgan, S.L.
T1  - Counterfactuals, causal effect heterogeneity, and the catholic school effect on learning
Y1  - 2001
DO  - 10.2307/2673139
JF  - Sociology of Education
VL  - 74
IS  - 4
SP  - 341
EP  - -374

ER  -