Steven McMahon: Map Catalog
Sunday, September 8, 2013
"DRG map"
DRG, digital raster graphic, is a scanned copy of a USGS topographic map. It represents all georeferenced images on earth. This map shows the Potomac River. http://egsc.usgs.gov/isb//pubs/factsheets/fs08801.html
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DRG, digital raster graphic, is a scanned copy of a USGS topographic map. It represents all georeferenced images on earth. This map shows the Potomac River. http://egsc.usgs.gov/isb//pubs/factsheets/fs08801.html
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Post a Comment