Abdelaziz , Mohammad Ali, Sumer Ali Grad, and Bsam Nahet Ali. “The Effect of Fertilization Systems and Tillage Depths on Soil Content of Organic Matter and Some Mineral Nutrients”. Latakia University Journal -Biological Sciences Series 35, no. 7 (November 3, 2013). Accessed July 29, 2025. https://journal.latakia-univ.edu.sy/index.php/bioscnc/article/view/551.