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Date: 2013-02-22 11:31:25Measurement Geophysics National Spatial Reference System Datum Benchmark Geographic coordinate system National Oceanic and Atmospheric Administration U.S. National Geodetic Survey VERTCON Geodesy Cartography Surveying | "Helios" and Houston SkylineAdd to Reading ListSource URL: www.ngs.noaa.govDownload Document from Source WebsiteFile Size: 1,03 MBShare Document on Facebook |