WEJE, I. I.; NTAMARK, J. J. Development Clusters In The Eastern Niger Delta, Nigeria: Ethiopian Journal of Environmental Studies & Management 11(Supplement). Afrischolar Discovery Repository (Annex), [S. l.], p. 801 – 813, 2018. DOI: 10.60951/afrischolar-518. Disponível em: https://www.publications.afrischolar.net/index.php/home/article/view/518. Acesso em: 24 may. 2026.