C93, Q48, D72, D83
C93, I21, J24, D83, O15
P48, Q58, H23, Q54
I20 I21 I22 I24 C93 O15
C93, D83, J16, I21
I15, I12, O12, C93
C93, D73, J15, H75, I24
C83, D84, F16, L52, R11
Q15, Q12, D71, D81
I25: Education and Economic Development, C93: Field Experiments, O33: Technological Change. Diffusion and Adoption, O55: Africa