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WOODEN TOWERS & SIGNAL POLES
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Coast-Geodetic-Survey
Geodesy
Triangulation
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Station Gibuson - a 68 foot tree signal.Party of John F. Pratt - off of PATHFINDER
3/18/2019 3:06:42 PM
Date:
1910
Credit:
C&GS; Season's Report Pratt 1910
Location:
Philippines
Subject:
Geodesy
Subject:
Triangulation
Subject:
Towers
Subject:
Wooden
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