Revision History for USGS Open-File Report 76-87

  Eaton, J.P., 1976, Notes on a broad-band variant of the 
       NCER seismic data multiplex system for use with 
       field tape recorders:  U.S. Geological Survey Open-
       File Report 76-87, 68 p. 
       [http://pubs.usgs.gov/of/1976/0087/].

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  Scanned, OCRed, and posted online at 
  http://pubs.usgs.gov/of/1976/0087/
  October 22, 2010

  Released in paper form
  1976
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