Limestone reserve calculation for engineering purposes for the Nfayil Formation (middle Miocene) in Bahr Al-Najaf Depression, Iraq. Iraqi Journal of Science [Internet]. 2022 Aug. 31 [cited 2024 Jun. 30];63(8):3533-4. Available from: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/5585