Haleem, A.M. and Abdulgafoor, E.A. (2010) “The Biosorption of Cr (VI) From Aqueous Solution Using Date Palm Fibers (Leef)”, Al-Khwarizmi Engineering Journal, 6(4), pp. 31–36. Available at: https://www.alkej.uobaghdad.edu.iq/index.php/alkej/article/view/510 (Accessed: 5 January 2026).