Essien, Ubong. “Shale Volume and Porosity Delineation of Coast Swamp Depobelt in Niger Delta Region, Nigeria, Using Well Log”. International Journal of Advanced Geosciences 7, no. 2 (September 20, 2019): 142–146. Accessed April 30, 2024. https://www.sciencepubco.com/index.php/IJAG/article/view/29772.