Ernest David, Dr. “A Study on Chemical and Bacteriological Analysis of Bore Water from Some Communities in Tirupathi Rural Areas of Chittoor District Andhra Pradesh India”. International Journal of Pharmaceutical & Biological Archive 4, no. 4 (January 1, 2014). Accessed November 22, 2024. http://ijpba.info/index.php/ijpba/article/view/1087.