Thivya, C., Chidambaram, S., Thilagavathi, R., Nepolian, M., & V.S, A. (2014). Evaluation of drinking water quality index (DWQI) and its seasonal variations in hard rock aquifers of Madurai district, Tamilnadu. International Journal of Advanced Geosciences, 2(2), 48-52. https://doi.org/10.14419/ijag.v2i2.2294