MUJAKPERUO, B. J. O.; AIREN, O. J. Biozonation and Paleoenvironmental Evaluation of Sapele Fields, Niger Delta, Southern Nigeria. Nigerian Journal of Physics, [S. l.], v. 32, n. 2, 2023. Disponível em: https://njp.nipngr.org/index.php/njp/article/view/41. Acesso em: 19 sep. 2024.