Revision History for USGS Open-File Report 95-497

  Edward W. Wolfe and Thomas C. Pierson

  Volcanic-Hazard Zonation for Mount St. Helens, 
  Washington, 1995

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  Post-processed PDFs
  Applied USGS Web template
  Added color to the plate
  Replaced scans with sharp vector files for text and plate
  September 20, 2013

  Posted at http://pubs.usgs.gov/of/1995/0497/
  December 22, 2010

  Published in paper form
  1995

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