C91, D12, Q18, Q5, D91, D11
D83, Q41, Q48, H23
C93, I23, J16, D83
D83, D84, I24
J14, J23, J16
C93 Field Experiments,D12 Consumer Economics Empirical Analysis,Q53 Solid Waste • Recycling Q58
C9, D83, E37
D12, D83, P16, Q11, Q13, Q18, Z18
C93 ; D72 ; J16 ; H83
D03, D12, D91, L94, Q41, C93