I11, O33, D83
C91; D81; D83; D91
C91, D01, D81, D83
C91, D12, Q18, Q5, D91, D11
D83, Q41, Q48, H23
C93, I23, J16, D83
D83, D84, I24
C93 Field Experiments,D12 Consumer Economics Empirical Analysis,Q53 Solid Waste • Recycling Q58
C9, D83, E37
D12, D83, P16, Q11, Q13, Q18, Z18