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WOODEN TOWERS & SIGNAL POLES
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Coast-Geodetic-Survey
Geodesy
Triangulation
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Field sketch of signal pole on tree stump.Sketch by Cephas Sinclair
3/18/2019 3:06:40 PM
Date:
1888
Credit:
NOAA Central Library
Location:
Louisiana, Atchafalaya River,
Subject:
Geodesy
Subject:
Triangulation
Subject:
Towers
Subject:
Wooden
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