Maheswari, S. Uma, and N. Balu. “Exclusive Study on Operation of 31 Bis of Trips-With Special Reference to Public Health”. International journal of health sciences 6, no. S1 (April 14, 2022): 4717–4735. Accessed June 1, 2026. https://www.sciencescholar.us/journal/index.php/ijhs/article/view/5897.