Wacano, D., Yoneda, M., Ardhayanti, L.I. , Rahmawati, S., Fadhlurahman, I.D., Nastiti, M.S.R. and Aulia, A. 2022. GROUNDWATER FLUORIDE HAZARD ZONATION IN THE VOLCANOGENIC POLLUTED AREA, EAST JAVA, INDONESIA. GEOMATE Journal. 22, 94 (Jun. 2022), 21–28.