Hachim Al-Hayani, H.G. and Alsamarai, H.A.H. 2023. Evaluation of the performance efficiency of large pharmaceutical companies in the private sector in Iraq for the period (2010-2020). Tikrit Journal of Administrative and Economic Sciences. 19, 63, 1 (Sep. 2023), 330–345. DOI:https://doi.org/10.25130/tjaes.19.63.1.17.