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Resurvey of the Heart of the Grand Canyon
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National Map Corps data collection
Moscow, PA
Olyphant, PA
Zhanna's Projects
Publications
Resurvey of the Heart of the Grand Canyon
The Manual of Geodetic Triangulation
Local Control Monument Databases
Level Lines - Recoveries in Progress
Airway Beacons
Eastern U.S.
Western U.S.
National Map Corps data collection
Moscow, PA
Olyphant, PA
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