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Stafford County /  Virginia / Geography of the United States / Boundary Markers of the Original District of Columbia / Weathering / Architecture / Construction / Building materials / Aquia Creek sandstone / Sandstone


DEPARTMENT OF THE INTERIOR U. S. GEOLOGICAL SURVEY Federal District Boundary Markers in Northern Virginia: Condition and Preservation Issues
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Document Date: 2011-10-28 16:32:00


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File Size: 154,56 KB

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