World Volcanoes
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资源简介：
Data mined from the NOAA National Geophysical Data Center. The 1571 volcanoe entries were compared to the simplified volcanic types listed in common middle school text books. All volcanoes were reassigned to these classification. Original classifications are still included in the database and listed at: http://www.volcano.si.edu/ as well as the NOAA site.
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Esri GIS Education创建时间：
2014-05-07
