Al-Alawi ع., Amer ع. ث., and Bin-Yahia ع. ع. “Estimation of Heavy Metals Concentration in Water, Soil and Some Plants in Al-Haswah Preserve - Aden -Yemen”. University of Aden Journal of Natural and Applied Sciences, vol. 22, no. 2, Oct. 2018, pp. 297-08, doi:10.47372/uajnas.2018.n2.a06.