I12, D83, D91
P25, Z12, O15, I30, D90, D91
C93, D91, I12
C93, I23
G50, D91, D83
C93, I20, I28, O15
C93, D9, I31, J15, O12
Q54, Q58, D72, D91
Q53, D10, C93
C93 Field Experiments; I21 Analysis of Education; I22 Educational Finance; I25 Education and Economic Development