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WOODEN TOWERS & SIGNAL POLES
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Coast-Geodetic-Survey
Geodesy
Triangulation
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Station Plainview in eastern Montana.Triangulation party of Wilbur Porter
3/18/2019 3:06:44 PM
Date:
28-Jun-34
Credit:
NOAA, George E. Marsh Album
Location:
Montana, Eastern
Subject:
Geodesy
Subject:
Triangulation
Subject:
Towers
Subject:
Wooden
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