Al-Shayeb, S.M., and M.R.D. Seaward. “Heavy Metal Distribution in Soil Profiles in Riyadh (Saudi Arabia)”. Asian Journal of Chemistry 13, no. 2 (March 30, 2010): 424–438. Accessed November 25, 2024. https://asianpubs.org/index.php/ajchem/article/view/22605.