LAHKAR, R., BARUWA, B. and SARKAR, P.D. 2021. A PRELIMINARY COMPARATIVE STUDY OF BACTERIAL COLONIES ISOLATED FROM THE ORAL CAVITY OF A BETEL QUID CHEWER AND A NON-CHEWER BEFORE AND AFTER TREATMENT WITH NATURAL PRODUCTS. UTTAR PRADESH JOURNAL OF ZOOLOGY. 42, 24 (Dec. 2021), 57–64.