Khan, Seema Ismat, Korish Hasnain Sahir, and Anila Siddiqui. “Microbiological Quality of Drinking Water and Beverages in Karachi, Pakistan: Microbiological Quality of Drinking Water”. Biological Sciences - PJSIR 53, no. 1 (February 22, 2010): 46–49. Accessed May 3, 2024. https://v2.pjsir.org/index.php/biological-sciences/article/view/419.