“Biostratigraphy Study of Planktonic Foraminifera in Shiranish Formation and Its Contact With Aaliji Formation in Pulkana Well No. 7 North Iraq”. Iraqi National Journal of Earth Science (INJES), vol. 19, no. 2, Dec. 2019, pp. 41-59, https://doi.org/10.33899/earth.2019.170276.