OBINNA BENNETH UKAIGWE; EUNICE NWACHUKWU; CHINEMEREM PATRICKS; EJIKEME UGWOHA. ASSESSMENT OF SURFACE AND GROUND WATER QUALITY AROUND ARTISANAL REFINING OPERATION SITES IN OHAJI / EGBEMA LGA, IMO STATE. International Journal of Innovations in Engineering Research and Technology, Maharashatra, India, v. 12, n. 6, p. 40–61, 2025. DOI: 10.26662/ijiert.v12i6.pp40-61. Disponível em: https://repo.ijiert.org/index.php/ijiert/article/view/4018. Acesso em: 31 jul. 2025.