AZIZ RAMADAN, ABDUL, and HASNA MANDIL. “Wastewater Irrigation and Soil Contamination Effect on Some Leafy Vegetables Grown in Syrian Aleppo City”. Asian Journal of Chemistry, vol. 21, no. 4, Mar. 2010, pp. 3243-52, https://asianpubs.org/index.php/ajchem/article/view/12446.