adnan salih, ibrahim and Rashid Abood, M. 2023. Evaluation of the Validity of the Rocks of the Pila Spi Limestone Formation in Duhok Anticline / Northern Iraq for Riprap Purposes. Iraqi National Journal of Earth Science (INJES). 23, 2 (Dec. 2023), 239–249. DOI:https://doi.org/10.33899/earth.2023.140666.1090.