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 Name                           Last modified      Size  
 Parent Directory                                    -   
 report-thumb.jpg               2021-01-21 17:02   10K  
 figure-5.pdf                   2021-01-21 17:02  352K  
 plate-1.pdf                    2021-01-21 17:02  375K  
 figure-4.pdf                   2021-01-21 17:02  381K  
 report.pdf                     2021-01-21 17:02   61M

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URL: https://pubs.usgs.gov/of/1951/0104/
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