Evaluation of Antibacterial Activity of Lemongrass Oil Against Oral Clinical Isolates ? An In vitro Study, Ilango, Paavai, Suresh Vasugi, Vummidi1 Ayswarya V., Ravel Vanessa, Chandran Veejai, Mahalingam Arulpari, and Reddy Vineela Katam , Pharmacognosy Journal, September 2019, Volume 11, Issue 5, p.1023-1028, (2019)