The suitability of Sinjar and Pila spi rocks for building and as railway ballast stone for the Bazian anticline fold in the Sulaymaniyah governorate. Tikrit J. Pure Sci. [Internet]. 2022 Dec. 2 [cited 2026 Nov. 14];27(1):36-40. Available from: https://tjpsj.org/index.php/tjps/article/view/80