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 Name                           Last modified      Size  
 Parent Directory                                    -   
 coverthb.jpg                   2017-10-18 12:32  9.4K  
 ofr20171133.pdf                2017-10-18 12:24  8.8M

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U.S. Department of the Interior | U.S. Geological Survey
URL: https://pubs.usgs.gov/of/2017/1133/
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