C93: Field Experiments; I38: Government Policy • Provision and Effects of Welfare Programs
L26, L81, M53, O12, O17
D91, I12, O12
J16 O12
I15, O12
O12, C93, D03, G21, J16
I210 (Analysis of Education), I39 (Welfare, Well-being, and Poverty: Other)
O12; L25; L26; O17; M20; M30; M40; M50
C93, D87, D9, F24, F22, O12
C93, D14, J43, I21, G21, O12, R20