Yusra Ihsan Sadeq و Yaseen Othman Abdullah 2023. Estimating The Demand Function for Health Services (Civil and Governmental) For A Sampleof Hospitals in Erbil Governorate. QALAAI ZANIST JOURNAL. 8, 1 (2023), 1041–1061. DOI:https://doi.org/10.25212/lfu.qzj.8.1.40.