Rao, G., Kumar, N., Rao, T., Rao, K. and V. Simhadri, N. 2015. Chemical Speciation of Binary Complexes of Pb(Ii), Cd(Ii) and Hg(Ii) with L-Methionine in Propylene Glycol -Water Mixture. Journal of Progressive Research in Chemistry. 2, 1 (Jul. 2015), 61-68.