The river and the rocks - the geologic story of Great Falls and the Potomac River Gorge
- Författare
- Geological Survey (U.S.)
- (U.S. Geological Survey and National Park Service., Bibliography: p. 46.)
- Genre
- Ej skönlitteratur, Bibliografi
- Språk
- Engelska
| Förlag | År | Ort | Om boken | ISBN |
|---|---|---|---|---|
| For sale by the Supt. of Docs., U.S. Govt. Print. Off. | 1970 | District of Columbia, Washington | v, 46 sidor. illus., map. 24 cm. |