ADAMS, Samuel; NKORO, Emeka. Optimizing Yam Production in Rivers State: Insights from a Cobb-Douglas Model Analysis. Journal of Business and Economic Options, [S. l.], v. 4, n. 2, p. 1–6, 2021. Disponível em: http://resdojournals.com/index.php/jbeo/article/view/182.. Acesso em: 4 mar. 2025.