Biostratigraphy of the Early Cretaceous Mauddud Formation in Ratawi Oilfield, Basrah Governorate, Southern Iraq. Iraqi Journal of Science [Internet]. 2022 Jun. 30 [cited 2024 May 4];63(6):2598-607. Available from: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/4835