Revision History for USGS Open-File Report 77-850

  James F. Gibbs, Thomas E. Fumal, Roger D. Borcherdt, 
  and Edward F. Roth

  In-Situ Measurements of Seismic Veolcities in the San 
  Francisco Bay Region; Part III

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  Posted online at http://pubs.usgs.gov/of/1977/0850/
  May 31, 2012

  Initial release in paper form
  1977

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