EL-SHARKAWY, M. A., K. SGAIER, M. YOUSEF, and M. NAGI. “The Response of Barley to Nitrogen Levels and Seeding Rates”. The Libyan Journal of Agriculture 9, no. 1 (April 23, 2023). Accessed November 22, 2024. http://uot.edu.ly/journals/index.php/ljagric/article/view/525.