I12, I18, D81, K13

O13 — Economic Development: Agriculture; Natural Resources; Energy; Environment; Other Primary

Economics: Empirical Analysis C93 — Field Experiments Q56 — Environment and Development

I11, I12, I13, I18

C93, I20, I28, O15

I21, I25, O15, D83

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

and Uncertainty), C91 (Design of Experiments: Laboratory, Individual Behavior)