ALI HUSSAIN, MOHAMMED, ABBAS ALO KHETHER, and MOHAMMED OTHMAN MOHAMMED. 2018. “EFFECT OF HERBICIDE AND NITROGEN FERTILIZER LEVELSON WEED AND WHEAT YIELD IN DIFFERENT SOWING DATES.”. Journal of Duhok University 20 (1), 73-86. https://doi.org/10.26682/avuod.2017.20.1.10.