Revision History for USGS 
  Scientific Investigations Map 3186

  Wes Hildreth, Judy Fierstein, and Andrew T. Calvert


  Geologic Map of Three Sisters Volcanic Cluster, Cascade
  Range, Oregon


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  Revised:
  Minor corrections to Pamphlet
  Database added
  August 13, 2013

  First posted online at http://pubs.usgs.gov/sim/3186/
  January 16, 2013

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