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Simkin, Tom; Siebert, Lee; Blong, Russell J. (1994). Smithsonian Institution. ed. Volcanoes of the world : a regional directory, gazetteer, and chronology of volcanism during the last 10,000 years. (2nd ed.). Tucson, Ariz.: Geoscience Press. ISBN0-945005-12-1. OCLC31967701