«Heavy Metals Contamination in Water, Soil and Plant Samples of Okomu National Park, Edo State, Nigeria» (2020) African Journal of Biomedical Research, 23(1), сс. 29–34. доступно на: https://www.ojshostng.com/index.php/ajbr/article/view/859 (просмотрено: 6 апрель 2026).