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 Name                           Last modified      Size  
 Parent Directory                                    -   
 plate-1-thumb.jpg              2011-05-02 11:35   11K  
 plate-1.pdf                    2011-03-31 15:33  4.2M  
 report-thumb.jpg               2011-05-03 13:12  2.7K  
 report.pdf                     2010-12-04 09:14  107K

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U.S. Department of the Interior | U.S. Geological Survey
URL: https://pubs.usgs.gov/of/1981/0680/
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