purl.fdlp.gov
, Under heading: Data Availability, February 1981 through August 2013--click on ftp://hazards.cr.usgs.gov/NEICPDE/olderPDEdata to access data files
Mode of access: Internet at the Earthquake Hazards Program web site. Previously available as of 3/23/07: http://earthquake.usgs.gov/research/topics.php?areaID=13#cat21.
Complexity Note
Continues the print version. Merged with: PDE monthly listing, to form: The Preliminary determination of epicenters (PDE) bulletin.
Action Note
committed to retain. Federal Depository Library Program (FDLP). For information on our retention commitment, please contact Microforms and Government Information.