Al-Mutwali, M., ماجد, Al-Khafaf, E. and ایناس 2025. Calcareous Nannofossils Biostratigraphy of the Lower Part of Balambo Formation (Lower Cretaceous) in Azmir Anticline - Northeastern Iraq. Iraqi National Journal of Earth Science (INJES). 19, 1 (Jun. 2025), 19–38. DOI:https://doi.org/10.33899/earth.2019.170269.