Osayi, E. E., Obaregwu, C. N., Amujiri, A. N., Nweze, A. E., Osayi, N. H., & Ugwu, B. C. (2026). Evaluation of the phytoremediation potential of Gmelina arborea Roxb. Seedlings on spent engine oil-stressed soil. The Bioscientist Journal, 14(1), 57-74. https://doi.org/10.54117/the_bioscientist.v14i1.203