D02, D47, D81, D91, I24
D91
(Valuation of Environmental Effects); C93 (Field Experiments)
J16, J14, I15, D91
D91
I38: Government Policy – Provision and Effects of Welfare Programs
C92, D91, Q0
I12, D83, D91
P25, Z12, O15, I30, D90, D91
C93, D91, I12