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Summary
| Description |
English: Map showing the five geological provinces through which the Potomac River flows |
| Source | https://www.nps.gov/pohe/learn/nature/geology.htm |
| Author | Katharine M Loughney |
Licensing
|
This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information. |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:23, 25 March 2019 |
| 973 × 741 (271 KB) | P999 | https://www.nps.gov/pohe/learn/nature/geology.htm ; public domain because work of NPS, which is a US government agency. |
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