J46, O17, C93, J31, J61
Q18, L66, D81, C93, D11
D81, D25, O12, O13, Q12, Q54
C93, D83, I21, I24,
J16, J24, M53, O12, O15
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