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6Volcanoes of the world : A regional directory, gazetteer, and chronology of volcanism during the lasby Tom Simkin, Lee SiebertSubjects: “...GUNUNG API...”
Published 1994
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7by Robert I.Tilling; Christina Heliker and Thomas L.WrightSubjects: “...Gunung Api...”
Published 1987
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9Analisis tekstur dan struktur breksi gunungapi di kali pentung, Kab. Gunungkidul, Yogyakarta ( Textuby Hill Gendhoet HartonoSubjects: “...GUNUNG API...”
Published 2001
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