A14, C91, C93, D30, D91, E24, Z13
C93, I23, J16, D83
I21, I25, I28, J24, O15
D63, D84, I24, I38, I31, J62
D83, D84, I24
A22 C93 I14 I24 J24 O33
J14, J23, J16
J13 J24 J18 C93
C93 Field Experiments,D12 Consumer Economics Empirical Analysis,Q53 Solid Waste • Recycling Q58
I22, I23, I24, C93