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Licensing
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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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Upload date | User | Bytes | Dimensions | Comment
2008-07-26 19:02 (UTC) | JWB | 25007 (bytes) | 450×258 | Image URL http://www.nps.gov/history/history/online_books/geology/publications/bul/845/images/fig35.jpg From government publication http://www.nps.gov/history/history/online_books/geology/publications/bul/845
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Date/Time Thumbnail Dimensions User Comment
current 21:43, 1 January 2012 450 × 258 (24 KB) commons>Ronhjones (Original text) : Image URL http://www.nps.gov/history/history/online_books/geology/publications/bul/845/images/fig35.jpg From government publication http://www.nps.gov/history/history/online_books/geology/publications/bul/845
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