C93 Field Experiments; I21 Analysis of Education; I22 Educational Finance; I25 Education and Economic Development
I21 I22 I24 I28 H52 J45, F22
I25, I28, O15
C93, I21, I22, I25
I21; J24
C93, I21, I24, J24, O15
C31, D85, I25, I38, O12, O15,
F22, O15
H42, I11, I18, O15
I21, I24, I25, O15