A.M. ADLAN, Mohamed; 						O. MUKHTAR, Nuri.
 Measuring N2- Fixation by some Varieties of Groundnut and their Residual Effect on Subsequent Sorghum Crop using 15N Methodology.
<strong>Gezira Journal of Agricultural Science</strong>, [S.l.], v. 1, n. 1, p. 23-31, may 2021.
ISSN 1728-9556. Available at: &lt;<a href="http://37.60.236.48/index.php/gjas/article/view/1941" target="_new">http://37.60.236.48/index.php/gjas/article/view/1941</a>&gt;. Date accessed: 03 june 2026.