A, 1Mohamed; 						D. ELFADIL, 2Abdelkarim; 						MUHIELDEEN, Osama A..
 Effect of tractor forward speed and type of transmission system on agricultural tractors performance under clay soil condition.
<strong>Gezira Journal of Engineering and Applied Sciences</strong>, [S.l.], v. 13, n. 2, feb. 2019.
ISSN 1858-5698. Available at: &lt;<a href="http://journals.uofg.edu.sd/index.php/gjeas/article/view/1220" target="_new">http://journals.uofg.edu.sd/index.php/gjeas/article/view/1220</a>&gt;. Date accessed: 30 june 2026.