Okey-Wokeh, C. G., & Okechukwu, K. W. (2022). Determination of heavy metal levels in surface water and sediment of Mini-Ezi Stream, Elele-Alimini, Rivers State, Nigeria. African Journal of Pure and Applied Sciences, 3(1), 136–143. https://doi.org/10.33886/ajpas.v3i1.259