C93 Field Experiments; I21 Analysis of Education; I22 Educational Finance; I25 Education and Economic Development
I25, I28, O15
C93, I21, I22, I25
C91, D91, I25
C31, D85, I25, I38, O12, O15,
I21, I24, I25, O15
I24,I25,J24
I25 Education and Economic Development; I38 Government Policy • Provision and Effects of Welfare
I10, I20, I24, I25
I24, I25, D80, D90