RIES, M.A. EL. “?EXTRACTION BEHAVIOUR OF COPPER LIGNOCAINE COMPLEX. Application for Determination of Lignocaine”. Biological Sciences - PJSIR 38, no. 8 (September 18, 1995): 312–315. Accessed February 4, 2026. https://biostaging.pjsir.org/index.php/biological-sciences/article/view/2508.