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 Name                           Last modified      Size  
 Parent Directory                                    -   
 b2220.html                     17-Aug-1998 14:09  3.8K  
 b2220.pdf                      14-Aug-1998 16:16  1.4M  
 b2220.pdf.md5.old              02-Mar-2007 15:36   33   
 banner.gif                     14-Aug-1998 16:16  8.0K  
 title.gif                      14-Aug-1998 16:16  116K

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U.S. Department of the Interior | U.S. Geological Survey
URL: http://http://pubs.usgs.gov/bul/b2220/
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Page Last Modified: Tuesday, July 28 2009, 01:08:18 PM