C93 (Field Experiments); D12 (Consumer Economics: Empirical Analysis); H2 (Taxation, Subsidies
M12, D83, M53, C93, J24
I12, C93
J44, J64, C93
C93, J24, J71
I21, O15, C93
I20, I21, I25, C93
C93, D23, L22, L23, M14, Q56
C91, D12, Q18, Q5, D91, D11
A14, C91, C93, D30, D91, E24, Z13