I21, I28, D83, C91, C93, O33
C91, D83, J24, J54
C72, C78, C91, C92
C93 – Field Experiments, D12 – Consumer Economics: Empirical Analysis, Q41 – Energy: Demand and Supply
C72, C91, D8, D9
C91, J15
C91, D90, D91
C33 C91 D91
), O13 (Economic Development: Agriculture; Natural Resources; Energy; Environment), C93 (Field Experiments)
C83; C91; D64; D90; Z13