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
Labor and Demographic Economics Education and Research Institutions
C93 – Field Experiments, D12 – Consumer Economics: Empirical Analysis, Q41 – Energy: Demand and Supply
A22, C90, I20
Q23 (Forests; Forestry), Q57 (Ecological Economics; Ecosystem Services; Biodiversity Conservation
I21, A22, D84, D91
I21 Analysis of Education
A22, C93, I20, I23, J08, J16