J16, C93, M54
C93, Q180, Q190, Q510
C93, D91, I12
C93, I23
D30, H23, H41, H71, I14, J22, O18, Q53
C93, I20, I28, O15
O18: Urban, Rural, Regional, and Transportation Analysis; R41: Transportation: Demand, Supply, and
C93, D9, I31, J15, O12
Q53, D10, C93
C93 Field Experiments; I21 Analysis of Education; I22 Educational Finance; I25 Education and Economic Development