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
C93, J23, J24, M51, O33
I21 — Analysis of Education O33 — Technological Change: Choices and Consequences; Diffusion
I21 – Analysis of Education: Education and Economic Development I28 – Education: Government Policy I31 – General Welfare, Well-Being
I21, J24, O33