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USGS Thesaurus
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USGS Quadrangles
Roanoke
quadrangle 1:250,000 scale
Subtopics
Appomattox
Buena Vista
Dillwyn
Roanoke
See also
Early Mesozoic basin aquifers
Mid Atlantic
Ohio
Piedmont and Blue Ridge crystalline-rock aquifers
South Atlantic-Gulf
Valley and Ridge aquifers
Valley and Ridge carbonate-rock aquifers
Virginia
West Virginia
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