I25: Education and Economic Development, C93: Field Experiments, O33: Technological Change. Diffusion and Adoption, O55: Africa
D31, D63, J24, J28, J31
J16,J24,J71, D03
M12, D83, M53, C93, J24
J24, J31, J38, J78
C93, J24, J71
I21, I25, I28, J24, O15
A22 C93 I14 I24 J24 O33
J13 J24 J18 C93
O15 Economic Development: Human Resources, Human Development, Income Distribution, Migration J61