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 Name                           Last modified      Size  
 Parent Directory                                    -   
 coverthb.jpg                   2017-10-11 10:58   30K  
 ofr20171121.pdf                2017-10-10 13:25  7.3M

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U.S. Department of the Interior | U.S. Geological Survey
URL: https://pubs.usgs.gov/of/2017/1121/
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