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OBSERVING THE ANGLES
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Coast-Geodetic-Survey
Geodesy
Triangulation
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Observer Atridge at Station Hackberry.Triangulation party of Wilbur Porter
3/18/2019 2:40:26 PM
Date:
1933
Credit:
NOAA, George E. Marsh Album
Location:
Nebraska
Subject:
Geodesy
Subject:
Triangulation
Subject:
Angles
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