Heavy Metals Contamination in Water, Soil and Plant Samples of Okomu National Park, Edo State, Nigeria. African Journal of Biomedical Research, [S. l.], v. 23, n. 1, p. 29–34, 2020. Disponível em: https://ojshostng.com/index.php/ajbr/article/view/859. Acesso em: 5 квіт. 2026.