I20 General, I32 Measurement and Analysis of Poverty, I21 Analysis of Education
C91, C99, D90, D91, G21, G24, G29, G40, J16, O12, O16, O39, O57
D91, I10
D85, D91, I15, J16
G50, G51, D14, D91, I22, H3, H81, E21
C91, D83, D91, L82
M30, D18 , L81, D91, C91
C91, D9, D91, D83
C91, D64, D8, D91
I25 Education and Economic Development; I15 Health and Economic Development