Rehman, Mohammad Arifur, 		Hasan, Md., 		Salam, Md., 		Salam, Abdus, 		Saddique, Nur-E-Alam, AND 		Alam, A.M. Shafiqul.
"Betel-nut Peel as an Adsorbent in the Removal of Cd, Cr and Pb from Aqueous Solutions" <em>Pakistan Journal of Analytical &amp; Environmental Chemistry</em> [Online], Volume 13 Number 2 (3 December 2012)