C93 Field Experiments,D12 Consumer Economics Empirical Analysis,Q53 Solid Waste • Recycling Q58
C93 ; D72 ; J16 ; H83
D83, D91, J16, J29, O53, Z13
J16, J71, C92, C91, M51
C90; C91; I21; J15; J16
J13;J22;I24;I12;J12;J16
D91, J16, C93, D63, O12, J22
Labor and Demographic Economics Education and Research Institutions
J12, J16, G51, G53, D14, I31
J16, J24, I11, O33, L86