Revision History for USGS Open-File Report 76-389

  Brian F. Atwater and Charles W. Hedel

  Distribution of Seed Plants with Respect to Tide Levels 
  and Water Salinity in the Natural Tidal Marshes of the 
  Northern San Francisco Bay Estuary, California

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  Post-processed PDFs of the text and plate 6; added Web 
  interface
  May 21, 2012

  Scanned the plates
  March 24, 2011

  Scanned and OCRed the text
  Posted online at http://pubs.usgs.gov/of/1976/0389/
  October 30, 2010

  Initial release in paper form
  May 3, 1976

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