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environment
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Columbia
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1981
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1. United States Summits, 2010
1981. United States Geological Survey and Economic and Social Research Institute (Reston, Va.). United States Summits is a point theme representing summits throughout the United States. This dataset is from the 2010 ESRI Data & Maps Collection. 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.