Human Capital Development in Education and Economic Growth: A Granger Causality Test in Pre- and Post-Deregulated Nigerian Economy (1970-2011). West African Journal of Open and Flexible Learning, [S. l.], v. 3, n. 1, p. 93–108, 2013. Disponível em: https://wajofel.org/index.php/wajofel/article/view/305. Acesso em: 27 mar. 2026.