Yawo, Okwet, and Ita Akpan. “Assessment of Heavy Metals Concentration in Sediments of Utibete River, Eastern Obolo, Southeastern Nigeria Using Particle Induced X-Ray Emission (PIXE) Technique”. Researchers Journal of Science and Technology 1, no. 1 (December 1, 2021): 17–36. Accessed May 15, 2024. https://rejost.com.ng/index.php/home/article/view/4.