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 Name                           Last modified      Size  
 Parent Directory                                    -   
 coverthb.jpg                   2017-06-21 15:32   34K  
 ofr20171075.pdf                2017-06-21 17:23  2.5M

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U.S. Department of the Interior | U.S. Geological Survey
URL: https://pubs.usgs.gov/of/2017/1075/
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