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Date: 2014-05-30 08:34:21Petrology Volcanic Ash Advisory Center Volcanic ash NOTAM Air safety SIGMET Types of volcanic eruptions Volcano Air travel disruption after the 2010 Eyjafjallajökull eruption Geology Volcanology Igneous petrology | Add to Reading ListSource URL: www.enac.gov.itDownload Document from Source WebsiteFile Size: 177,79 KBShare Document on Facebook |