K.M.Ganesh, G Suryanarayana and Chelli Janardhana (2015) “Groundwater quality assessment by WQI and GIS tools in the villages of Bukkapatnam Mandal, Anantapur district, Andhra Pradesh (India)”, International Journal of Advance Engineering and Research Development (IJAERD), 2(4), pp. 537–544. Available at: https://ijaerd.com/index.php/IJAERD/article/view/697 (Accessed: 5 December 2023).