Study the effect of area and productivity on the production of dry beans in Sudan during the period-2015-2008. Journal of Social Sciences, [S. l.], v. 3, n. 10, p. 390–407, 2019. Disponível em: https://journalsocialsciences.de/index.php/jss/article/view/512. Acesso em: 8 aug. 2026.