Revision History for USGS Open-File Report 78-509

  David M. Boore, Adolph A. Oliver III, Robert A. Page
  and William B. Joyner

  Estimation of Ground Motion Parameters
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  Posted online at http://pubs.usgs.gov/of/1978/0509/
  October 18, 2011

  Initial release in paper form
  1978

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