Javed T, Awan FA, Arshad M, Mashiatullah A, Iftikhar FJ, Khan SN. REMOVAL OF CADMIUM, COPPER, LEAD AND ZINC FROM SIMULATED INDUSTRIAL EFFLUENTS USING SILICA POWDER. The Nucleus [Internet]. 2013 May 21 [cited 2024 Nov. 22];50(2):135-40. Available from: http://thenucleuspak.org.pk/index.php/Nucleus/article/view/763