Version history for


  Nelson, Philip H., and Bird, Kenneth J., 2005, Porosity-
       depth trends and regional uplift calculated from 
       sonic logs, National Petroleum Reserve in Alaska:  
       U.S. Geological Survey Scientific Investigations 
       Report 2005-5051, 28 p. [available on the World Wide 
       Web at http://pubs.usgs.gov/sir/2005/5051/ ].



  Version 1.0, October 18, 2005

  Initial release online at
  http://pubs.usgs.gov/sir/2005/5051/