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current | 13:51, 15 February 2010 | 1,365 × 844 (438 KB) | Alexrk2 | {{Information |Description=Horizontal Control Network of the United States June 1931 |Source=http://www.ngs.noaa.gov |Date=1931 |Author=not credited |Permission={{PD-USGov-DOC-NOAA}} |other_versions= }} Category:Geodesy [[Category:United States Coast |
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