O13 — Economic Development: Agriculture; Natural Resources; Energy; Environment; Other Primary
Economics: Empirical Analysis C93 — Field Experiments Q56 — Environment and Development
I21, I25, O15, D83
General Welfare, Well-Being, Education, Children,
I20, I25, D80, O15
I25, I30, J13, O15, O55
of Welfare Programs) H75 (State and Local Government • Health • Education • Welfare • Public Pensions • Intergovernmental Relations)
Education and Economic Development
12, I15, I18, I25, O12, C93
Health, Education and Welfare
I21, I25, J13, J24, O15, C93