Al-Hayani, A.S. J. Z., et al. “ADSORPTION OF COPPER ON SURFACES OF FEASIBLE MATERIALS (PLANT WASTE, SLUDGE AND BENTONITE) METAL)”. IRAQI JOURNAL OF AGRICULTURAL SCIENCES, vol. 53, no. 3, June 2022, pp. 654-9, https://doi.org/10.36103/ijas.v53i3.1575.