C93, J28, J61, R23, R58
C93 – Field Experiments, D12 – Consumer Economics: Empirical Analysis, Q41 – Energy: Demand and Supply
C93, D91, J24
C93, D83, D91, J22, J81
I2, J24, C93, D9
I21, I31, J16
C93, O33, L82, D83
C93, D83, J31, J71, M51
), O13 (Economic Development: Agriculture; Natural Resources; Energy; Environment), C93 (Field Experiments)
C93, D44, Q57