Khalid, A.H. 2021. Evaluation of the Rocks of The Pila Spi Formation of Duhok Anticline For Building Stones – Kurdistan Region Of Iraq. Science Journal of University of Zakho. 9, 4 (Dec. 2021), 163–170. DOI:https://doi.org/10.25271/sjuoz.2021.9.4.837.