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WikiPedia: Novarupta http://geology.com/novarupta/ http://www.sciencedirect.com/science?_ob=ArticleUR... http://www.avo.alaska.edu/volcanoes/activity.php?v... http://www.avo.alaska.edu/volcanoes/volcinfo.php?v... http://adsabs.harvard.edu/abs/1983JVGR...18....1H http://adsabs.harvard.edu/abs/1992BVol...54..646F http://www.volcano.si.edu/world/volcano.cfm?vnum=0... http://www.volcano.si.edu/world/volcano.cfm?vnum=0... http://www.volcano.si.edu/world/volcano.cfm?vnum=0... http://www.volcano.si.edu/world/volcano.cfm?vnum=1...