Okwelle, P. L., & Marcus, A. C. (2025). Heavy Metal Concentrations in Pumpkin Leaf, Water Leaf, and Soil from Selected Dumpsites in Port Harcourt Metropolis, Nigeria. Faculty of Natural and Applied Sciences Journal of Scientific Innovations , 6(3), 96–105. https://doi.org/10.63561/fnas-jsi.v6i3.956