Saleh, S.M.K., Nasr, S.M. and Okbah, M.A. 2019. Geochemical rorms and risk assessment of some heavy metals in Aden coasts sediments, Yemen. University of Aden Journal of Natural and Applied Sciences. 23, 2 (Oct. 2019), 383–397. DOI:https://doi.org/10.47372/uajnas.2019.n2.a10.