Primary airport control station

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31	Input Formats and Specifications of the National Geodetic Survey Data Base Volume I. Horizontal Control Data Charles W. Challstrom, NOAA Add to Reading List Source URL: geodesy.noaa.gov Language: English - Date: 2003-03-13 10:34:39 Technology Measurement Navigation Geophysics Global Positioning System National Spatial Reference System Geodetic system U.S. National Geodetic Survey Primary airport control station Geodesy Cartography Surveying