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U.S. Geological Survey
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Elevation
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Penn State
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1. 1:24,000 - 7.5 minute digital elevation models (DEM) for the District of Columbia (30 meter)
2000. U.S. Geological Survey. Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...
2. 1:24,000 - 7.5 minute digital elevation models (DEM) for Virginia (30 meter)
2000. U.S. Geological Survey. Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...
3. 1:24,000 -7.5 minute digital elevation models (DEM) for West Virginia (30 meter)
2000. U.S. Geological Survey. Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...
4. Digital Elevation Model - 10-Meter: Pennsylvania
1996. U.S. Geological Survey. Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...
5. Digital Elevation Model - 30-Meter: Pennsylvania
1996. U.S. Geological Survey. Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...