Almaliki SA, Himoud MS, Muhsin SJ. Mathematical Model for Evaluating Slippage of Tractor Under Various Field Conditions. Basrah J. Agric. Sci. [Internet]. 2021 Feb. 9 [cited 2024 Nov. 24];34(1):49-5. Available from: https://bjas.bajas.edu.iq/index.php/bjas/article/view/322