M53, M51, D22, D23, D25, D52, D80, D83, J20, J24, J29, J30, J31, J46, J63, L20, L26
C93, D03, D61, D91, J22, O12, Q12
D25, H20, H22, H25, H26, H32, J23, J30
Health, Education, and Welfare, Microeconomics
C92, C93, J33, D03, M52
C83, C90, J24, J30
C83, C90, J24, J30
D03, D49, G13, G14, L83
D03,D49,G13,G14,L83
E3, E31, D84, D4, L11, Q41, J30