OKIDHIKA, Clinton Umebhidhi; ABULE, Esther Chinyere; OKWELLE, Peace Lawrence. Assessment of the Long-Term Impact of Crude Oil Contamination on Groundwater Trophic State Index (TSI) in Ekpeyeland. Faculty of Natural and Applied Sciences Journal of Basic and Environmental Research, [S. l.], v. 2, n. 3, p. 61–71, 2025. DOI: 10.63561/jber.v2i3.826. Disponível em: https://fnasjournals.com/index.php/FNAS-JBER/article/view/826. Acesso em: 8 oct. 2025.