Afrah Jasim Zayr Alshuaili and Azad Jalal Mohammed Sharaf 2024. Geographical distribution and concentration coefficient of some summer vegetable crops in Erbil Governorate. QALAAI ZANIST JOURNAL. 9, 2 (Jul. 2024), 751–780. DOI:https://doi.org/10.25212/lfu.qzj.9.2.26.