O15 Economic Development: Human Resources, Human Development, Income Distribution, Migration J61
H26, D91, I25, O12, C93
I24, I38, J13
J12, J22, Z13
D83, D91, J16, J29, O53, Z13
C93, J23, J24, M51, O33
J16, J71, C92, C91, M51
O15, I24, I25
C93, D83, D91, I23, I31, L82, L86, O33
Q52, Q53, I18, I31