TY  - CHAP
A1  - Card, D.
T1  - The causal effect of education on earnings
Y1  - 1999
DO  - 10.2307/2523702
A3  - Bound, J.
A3  - Jaeger, D.A.
T2  - Handbook of labor economics
CY  - New York
PB  - Elsevier

ER  -