J16, C93, M54
C93, Q180, Q190, Q510
C93, D91, I12
C93, I23
D30, H23, H41, H71, I14, J22, O18, Q53
C93, I20, I28, O15
C93, D9, I31, J15, O12
Q53, D10, C93
C93 Field Experiments; I21 Analysis of Education; I22 Educational Finance; I25 Education and Economic Development
Q16, C93, D91