UMANAH, Inyeneobong A.; AWAKA-AMA, Joachim J.; UDO, Godwin J. Assessment of Heavy Metal and Polycyclic Aromatic Hydrocarbon (PAH) Levels in Drilling Fluids and Effluents from Niger Delta Oil Fields. Researchers Journal of Science and Technology, [S. l.], v. 5, n. 3, p. 22–40, 2025. Disponível em: https://rejost.com.ng/index.php/home/article/view/179. Acesso em: 20 apr. 2025.