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 Name                           Last modified      Size  
 Parent Directory                                    -   
 report.pdf                     02-Sep-2011 15:38   27M  
 report-thumb.jpg               06-Sep-2011 14:08  8.5K

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U.S. Department of the Interior | U.S. Geological Survey
URL: http://pubs.usgs.gov/of/1981/1118/
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