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Author
United States Geological Survey
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Data & Maps for ArcGIS®
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Columbia
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Year
1981
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1. United States Schools, 2012
1981. United States Geological Survey and Environmental Systems Research Institute (Redlands, Calif.). United States Schools is a point theme representing schools in the United States. . Esri.
2. United States Summits, 2012
1981. United States Geological Survey and Environmental Systems Research Institute (Redlands, Calif.). United States Summits is a point theme representing summits throughout the United States. Esri.