THOMAS, L., D. RAVINDRANATH, and R. KANJUR. “Microbiological Assessment of Pre-Monsoon and Post-Monsoon Open Well Water Quality in Karumalloor Panchayat, Ernakulam, Kerala”. Biotechnological Research, Vol. 1, no. 2, June 2015, pp. 146-8, http://br.biomedpress.org/index.php/br/article/view/698.