C93 – Field Experiments, D12 – Consumer Economics: Empirical Analysis, Q41 – Energy: Demand and Supply
I21, I31, J16
Q23 (Forests; Forestry), Q57 (Ecological Economics; Ecosystem Services; Biodiversity Conservation
J16, Q54,Q58, H4
I21, J16, C83
C93, J12, J16, J31.
J13, J16, J24, M53, D91, O15
I18, J16, D83, K42
J16, J71, K42, D73, H83, O15
J16, J12, E24, J21