Geologic map of Frederick County and adjacent parts of Washington and Carroll Counties
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Bibliographic Information
Geologic map of Frederick County and adjacent parts of Washington and Carroll Counties
Maryland Geological Survey, 1938
Cartographic Material(Map)
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Note
Edward B. Mathews, surveyed in cooperation with U.S. Geological Survey
Scale 1:62,500 (W 77°45'--W 77゚00' / N 39゚45'--N 39゚10')