Products Q41 — Energy: Demand and Supply; Prices Q48 — Energy: Government Policy I38 — Government Policy

; Provision and Effects of Welfare Programs J22 — Time Allocation and Labor Supply D12 — Consumer

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

O33, C93, M53, D91, J24

Q23, Q56, O13, Q13, C93

I21, I24, C93, O33

C90, D62, D90, I38

O12, O14, O17, D22, L26, C93

C91, D01, D91, O33

I21, J24, C93

D12 (Consumer Economics: Empirical Analysis), Q50 (Environmental Economics: General), D91 (Micro-Based Behavioral Economics), C93 (Field Experiments)

D91, D14, J16, J71