O15, O12, I15, J13, J24
J23, J24, O33, L2, M54, D83
J24, J61, J64, I26, O15, D82.
J24, J16
J64, J24, D03, D81, D83, C93, L86
C93, I21, J24, D83, O15
I20, I21, J24, O15
A2: Economics Education and the Teaching of Economics
I25: Education and Economic Development, C93: Field Experiments, O33: Technological Change. Diffusion and Adoption, O55: Africa
D31, D63, J24, J28, J31