C93 Field Experiments,D12 Consumer Economics Empirical Analysis,Q53 Solid Waste • Recycling Q58
I21 — Analysis of Education O33 — Technological Change: Choices and Consequences; Diffusion
I21 – Analysis of Education: Education and Economic Development I28 – Education: Government Policy I31 – General Welfare, Well-Being
C93 – Field Experiments, D12 – Consumer Economics: Empirical Analysis, Q41 – Energy: Demand and Supply
C93, D61, D83, D91, L95, Q25, Q55
D61, I24, I25, J24, O30
C25, D12; D61; I12
I21, O15, C93, D61
D61, 012, Q54
I21 Analysis of Education