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OBSERVING THE ANGLES
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Coast-Geodetic-Survey
Geodesy
Triangulation
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Mosquito protection.Survey work along Kuskokwim River.Survey crew off the YUKON
3/18/2019 2:40:24 PM
Date:
1915
Credit:
C&GS; Season's Report Lukens 1915-99
Subject:
Geodesy
Subject:
Triangulation
Subject:
Angles
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