Study of Planktonic Foraminferal biostratigraphy and depositional environment of Khasib, Tanuma and Saadi Formations in well Agel -12- Northeastern Tikrite. Iraqi Journal of Science. 2023;54(3):617-627. Accessed May 9, 2024. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/12164