Redefinition of the U.S. Vertical Datum: Replacing NAVD 88 Informational packet including GRAV-D updates 1Last Updated 12 October 2010 (DAS)
Modernizing the NSRS: The NGS 10 year plan Dru Smith, Chief Geodesist NOAA’s National Geodetic Survey Federal Geospatial Summit12010 May 11.
