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 Date: 2013-10-22 12:06:54Geographic information systems Digital elevation model Geomorphology Topography USGS DEM National Elevation Dataset Arc Geography Planetary science Cartography Physical geography Remote sensing |
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NED Release Notes December 2007 The December 2007 release of the National Elevation Dataset (NED) represents the 43rd update of the 1-arc-second NED layer since the bi-monthly maintenance schedule began in June[removed]Thi