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OBSERVING THE ANGLES
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Coast-Geodetic-Survey
Geodesy
Triangulation
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Observing tent on Sequam Island.Note wind causing billowing tent
3/18/2019 2:40:27 PM
Date:
1941
Credit:
Captain Harry D. Reed, C&GS;
Subject:
Geodesy
Subject:
Triangulation
Subject:
Angles
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