Razi, F., Hendrayana, H. and Harijoko , A. 2024. Identification and distribution of fluoride in Singkep Island, Lingga Regency, Riau Islands. Journal of Degraded and Mining Lands Management. 11, 4 (Jul. 2024), 6185–6199. DOI:https://doi.org/10.15243/jdmlm.2024.114.6185.