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Date: 2008-08-30 00:33:13United States Geological Survey Cartography GIS file formats Geography Physical geography Digital line graph Topography USGS DEM Web mapping Geographic information system Map Topographic map | A VERSATILE MAPPING SYSTEM FOR THE USGS 1:100,000 DLGs David J. Cowen and Timothy R. White University of South CarolinaAdd to Reading ListSource URL: mapcontext.comDownload Document from Source WebsiteFile Size: 1,09 MBShare Document on Facebook |