“Heavy Metals Contamination in Water, Soil and Plant Samples of Okomu National Park, Edo State, Nigeria”, AJBR, bd. 23, nr. 1, s. 29–34, jan. 2020, Set: 5. april 2026. [Online]. Tilgængelig hos: https://ojshostng.com/index.php/ajbr/article/view/859