C92 C78 I20
Q18, L66, D81, C93, D11
I20, I23, J24, O33
O33, J24, D83, P10
C93, D83, I21, I24,
I21, I24, I26, J16, J22, J24
C93, D22, D90, J16, O12
D83, J12, C93, N36
I24, J24, H52
C93 - Field Experiments; H52 - Government Expenditures and Education; I21 - Analysis of Education