12, I15, I18, I25, O12, C93
K14, K42, O15, O10
C93 (field experiment), J24 (Human Capital • Skills • Occupational Choice • Labor Productivity
O12, O15, J15, I38
D72, C91, D83, J16
A23, C93, J24, O31, L86, I31
26, J24, D83, D84
J16, J71, M51, O12, O17
D12, D91, I12, J16, O12, Z13
I24, I26, J24, G53