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USGS Thesaurus
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USGS Quadrangles
Jenkins
quadrangle 1:250,000 scale
Subtopics
Hazard
Irvine
Pikeville
Williamson
See also
Kentucky
Mississippian aquifers
Ohio
Pennsylvanian aquifers
Silurian-Devonian aquifers
Tennessee
Valley and Ridge aquifers
Virginia
West Virginia
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