Prasetio R, Laksminingpuri N, Pratikno B. Karakterisasi Isotop dan Geokimia Area Panas Bumi Danau Toba, Sumatera Utara. jair [Internet]. 2017 Dec. 20 [cited 2025 Dec. 6];13(2):79-86. Available from: https://ejournal.brin.go.id/jair/article/view/7479