Droughts in the Sudano-Sahelian Ecological Zone of Nigeria: Implications for Agriculture and Water Resources Development. Global Journal of Human-Social Science, [S. l.], v. 13, n. 3, p. 1–10, 2013. Disponível em: https://www.socialscienceresearch.org/index.php/GJHSS/article/view/. Acesso em: 30 sep. 2026.