URBAN PLANNING PROBLEMS IN NIGERIA: A CASE OF ONITSHA METOPOLIS OF ANAMBRA STATE. Singaporean Journal of Business Economics and Management, [S. l.], v. 1, n. (12), p. 41–59, 2013. Disponível em: https://www.singaporeanjbem.com/index.php/SJBEM/article/view/156. Acesso em: 7 nov. 2026.