M, S. and P, J. 2019. Comparative Study of Adsorption between Walnut and Groundnut Shell by Treating Lead (Pb II). SAMRIDDHI : A Journal of Physical Sciences, Engineering and Technology. 11, SUP (Dec. 2019), 102-105. DOI:https://doi.org/10.18090/samriddhi.v11iSUP-1.17376.