Mandal, Juthika, and Srabani Sanyal. “Geospatial Analysis of Fluoride Concentration in Groundwater in Puruliya District, West Bengal”. Space and Culture, India 6, no. 5 (March 31, 2019): 71-86. Accessed June 20, 2019. http://spaceandculture.in/index.php/spaceandculture/article/view/369.