NOAH, O. Examining the state of infrastructure development in Sub-Saharan Africa. Journal of Economic Research & Business Administration, [S. l.], v. 135, n. 1, p. 88–102, 2021. DOI: 10.26577/be.2021.v135.i1.09. Disponível em: https://be.kaznu.kz/index.php/math/article/view/2286. Acesso em: 22 dec. 2024.