Bello, Abdel Raouf Suleiman. “Intermediate Technology for Food Security and Sustainable Development in the Central Rain Lands of Sudan: The Need and Justification”. Advances in Social Sciences Research Journal 4, no. 9 (May 10, 2017). Accessed September 29, 2024. http://116.203.177.230/index.php/ASSRJ/article/view/3134.