D22, J15, D83, C93, L86, L25
J46, O17, C93, J31, J61
Q18, L66, D81, C93, D11
C93, D83, I21, I24,
I21, I24, I26, J16, J22, J24
C93, D22, D90, J16, O12
D83, J12, C93, N36
C93 - Field Experiments; H52 - Government Expenditures and Education; I21 - Analysis of Education
J16, J24, C93, J33
D03, D12, D91, L94, O13, Q41, C93, H42, H53