Nigeria, Mono-Product Economy and the Global Economic Recession: Problems and Prospects. Global Journal of Human-Social Science, [S. l.], v. 12, n. C11, p. 41–47, 2012. Disponível em: https://socialscienceresearch.org/index.php/GJHSS/article/view/468. Acesso em: 19 feb. 2026.