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The methods used in primary level and triangulation work in unsettled and broken country (1909)
Stewart, John Truesdale · leaf 96
e e 1 e a t i he c c r 3 were 1 o ca ted ere a e rGeodesy · Surveying · Triangulation · Theses
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
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