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The river and the rocks : the geologic story of Great Falls and the Potomac River Gorge

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Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Unnumbered Series
Title:
The river and the rocks : the geologic story of Great Falls and the Potomac River Gorge
Year Published:
1970
Language:
English
Publisher:
U.S. Geological Survey
Description:
v., 46 p., ill. map, 24 cm.