AbdElmowla Ahmed , Mohammed Ahmed, and Abu Bakr Al-Sayed. “Effect of Forward Speed and Soil Type in Massey Ferguson Tractor (Model 290) Performance”. Diyala Agricultural Sciences Journal 14, no. 2 (December 30, 2022): 33–42. Accessed April 18, 2024. https://journal.djas.uodiyala.edu.iq/index.php/dasj/article/view/5229.