KHAN, A. R., F. UDDIN, and S. ALI. “?ADSORPTION STUDIES OF TARTARIC ACID FROM AQUEOUS SOLUTIONS ON CHARCOAL”. Biological Sciences - PJSIR, vol. 37, no. 1-2, Jan. 1994, pp. 40-42, https://v2.pjsir.org/index.php/biological-sciences/article/view/2568.