“Comparison Between the Performance of a Movable Boards Ditch Opener and the Conventional Ditch Opener in Cultivated and Uncultivated Soils”. University of Thi-Qar Journal of agricultural research 9, no. 2 (December 17, 2021): 108–117. Accessed November 23, 2024. https://jam.utq.edu.iq/index.php/main/article/view/110.