D11, D12, D91, C93, G51, O33
D12, D83, H42, I12, O33, Q54.
D14, D91, G51, G53, O33, C93
D72, D91, H26, H41, I21
D91, D14, J16, J71
O12, O33, D91, D83, C93, Q16
C91, D83, D91, G11, G41
O12 (Microeconomic Analyses of Economic Development); O13 (Agriculture; Natural Resources); D12
C90; D01; D63; D83; D91
C92,D91