M. Ali, El Abbas Doka, John Aitken, and Neil R. Munro. “Studying the Characteristics of Vertisols to Set Up Field Management Practices at Dinder Area (Sennar State - Sudan)”. European Journal of Applied Sciences 5, no. 5 (October 30, 2017): 21. Accessed May 30, 2026. https://scholarpublishing.org/journals/index.php/EJAS/article/view/7817.