RAMAKRISHNA, CH., D. MALLIKARJUNA RAO, K. SUBBA RAO, and N. SRINIVAS. “Studies on Groundwater Quality in Slums of Visakhapatnam, Andhra Pradesh”. Asian Journal of Chemistry 21, no. 6 (March 30, 2010): 4246–4250. Accessed April 21, 2026. https://asianpubs.org/index.php/ajchem/article/view/18156.