Harahap, Bhakti Hamonangan, Pusat Survei Geologi, Indonesia
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Jurnal Geologi dan Sumberdaya Mineral Vol. 21 No. 1 (2011): Jurnal Sumber Daya Geologi - Article
PETROLOGY AND GEOCHEMISTRY OF THE UPPER MIOCENE VOLCANICS ON THE WESTERN PART OF BARISAN MOUNTAIN RANGES, LUBUK SIKAPING REGION, WEST SUMATRA
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