[net.lang.prolog] Multiple copies of VolumeII, #20

Restivo%SU-SCORE@sri-unix.UUCP (05/21/84)

From:  Chuck Restivo  <Restivo@SU-SCORE>

cwr - I apologize to those that received multiple copies
      of this issue. Not deleting intermediate copies
      while preparing the Digest seems to have caused
      the problem.