J46, O17, C93, J31, J61
D22; D43; E31; E70
G21, H32, O13, O33, Q23, Q42, Q51
Q18, L66, D81, C93, D11
O33, J24, D83, P10
C93, D83, I21, I24,
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