3 volumes · 75 issues on disk
Single Issue · folder: Main Series · Jul 1988 – Apr 1990 · number from the DC Comics wiki · Metron calls it V2
Single Issue · folder: Main Series · Oct 1994 – Nov 1995 · number from the DC Comics wiki · Metron calls it V3
Single Issue · folder: Main Series · Oct 2004 – Mar 2009 · number from the DC Comics wiki · Metron calls it V4