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2Crater Lake Institute, "Volcano and Earthquake Hazards in the Crater Lake Region, Oregon." Hazards of Silicic Eruptions Outside the Caldera 11/21/09 1. 26 Mar 2009 .

3Grunwald, Henry. Volcano. 1. Morristown: Morristown, New Jersey, 1982.

4Luong, QT . "Crater Lake and Wizard Island." Crater Lake National Park, Oregon, USA crl