The river and the rocks : the geologic story of Great Falls and the Potomac River Gorge /
| Main Authors: | , , , |
|---|---|
| Corporate Author: | |
| Format: | Government Document Book |
| Language: | English |
| Published: |
[Reston, Va.] : Washington :
Dept. of the Interior, Geological Survey ; for sale by the Supt. of Docs., U.S. Govt. Print. Off.,
1980
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| Series: | Geological Survey bulletin ;
1471 |