Remediation of soil contaminated with Mn, Cu and Zn around the Mbembele mine in Gabon: Phytoremediation approach (Vetiveria zizanioides and Phacelurus gabonensis)Rudy Bekoung Assoumou, Norbert Ondo Zue Abaga and Mohamed TayebiE3S Web Conf., 412 (2023) 01089DOI: https://doi.org/10.1051/e3sconf/202341201089