P.SIVAKUMAR, M. KANAGAPPAN, and S. SAM MANOHAR DAS. 2015. “PHYSICO-CHEMICAL CHARACTERISTICS OF UNTREATED EFFLUENT FROM TANNERY INDUSTRIES IN TAMIL NADU: A COMPARATIVE STUDY”. International Journal of Pharma and Bio Sciences 6 (1):446-51. https://ijpbs.net/index.php/journal/article/view/4010.