Syahrizal Koem https://www.scopus.com/authid/detail.uri?authorId=57200088470 Department of Earth Science and Technology, Universitas Negeri Gorontalo Indonesia
Rakhmat Jaya Lahay Department of Earth Science and Technology, Universitas Negeri Gorontalo Indonesia
Moch Rio Pambudi Department of Earth Science and Technology, Universitas Negeri Gorontalo Indonesia
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