ABBAS, Abdalla E. et al.
Effects of phosphorus and zinc fertilizers on their contents in soil, plant and grains of corn.
Gezira Journal of Agricultural Science, [S.l.], v. 5, n. 2, dec. 2007.
ISSN 1728-9556. Available at: <http://37.60.236.48/index.php/gjas/article/view/444>. Date accessed: 03 june 2026.