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Author: Jerry Penry, PS
08.23.2013
The American Theodolite
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05.24.2013
The Missouri River Commission Survey
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03.23.2013
Tracer Triangulation
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01.26.2013
The Vérendrye Plate
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11.17.2012
Invar—The Breakthrough for a Low Expansion Alloy
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08.11.2012
The Deadwood Datum
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05.17.2009
Survey Or No Survey: The Unlicensed Land Surveyor
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05.01.2008
The Receding Railroads
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03.19.2008
Illegal Fences of the Great Plains
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