C93 (field experiment), J24 (Human Capital • Skills • Occupational Choice • Labor Productivity
C93, D84, D91, Q54
I22, I23, I24, C93
C93, I10
C91; D72; H11; H41
I24, C93, J15
D72, C91, D83, J16
A23, C93, J24, O31, L86, I31
J16, J71, M51, O12, O17
D12, D91, I12, J16, O12, Z13