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Start Over Resource Type Polygon data Subject Geoscientific Information Creator NOAA Paleoclimatology Program (U.S.)
2011. World Data Center for Paleoclimatology and NOAA Paleoclimatology Program (U.S.). This line shapefile represents the extent of glaciers during the late Wisconsin glaciation (also known as the Last Glacial Maximum, about 20,000 ye... World Data Center for Paleoclimatology.