D63, H53, Q54
C93, D01, D40, D47, D63, J47, Z18
C72, D31, D63, D81, D90, I00
I20 General, I32 Measurement and Analysis of Poverty, I21 Analysis of Education
C90, D31, D63, D83, H23
C91, C92, M54, D63
C91, C92, D02, D63, D90
D63, I14, I18
D31, D63
H26, D63, D64