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U.S. Coast & Geodetic Survey benchmark [02]
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U.S. Coast & Geodetic Survey benchmark [01]
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Survey measuring point at Vienna Metro station
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Survey point at Coles Run Reservoir [02]
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Survey point at Coles Run Reservoir [01]
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U.S. Coast & Geodetic Survey benchmark in downtown Crossville [01]
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U.S. Coast & Geodetic Survey benchmark in downtown Crossville [02]