I21 — Analysis of Education; I25 — Education and Economic Development; C93 — Field Experiments
I25 D85 L86 O55
I15 I25 J13 O15
I21, I25, J24, O15
O13 — Economic Development: Agriculture; Natural Resources; Energy; Environment; Other Primary
Economics: Empirical Analysis C93 — Field Experiments Q56 — Environment and Development
I21, I25, O15, D83
I20, I25, D80, O15
I25, I30, J13, O15, O55
Education and Economic Development
12, I15, I18, I25, O12, C93