Issue #1 Apr 01, 1978 Issue #2 Sep 06, 1978 Issue #3 Dec 13, 1978 Issue #4 Apr 13, 1979 Issue #5 Aug 01, 1979 Issue #6 Jan 01, 1980 Issue #7 May 01, 1980 Issue #8 Sep 01, 1980 Issue #9 Feb 01, 1981 Issue #10 Jun 01, 1981 Issue #11 Oct 01, 1981 Issue #12 Feb 01, 1982 Issue #13 Jun 01, 1982 Issue #14 Oct 01, 1982 Issue #15 Feb 01, 1983 Issue #16 Jun 01, 1983 Issue #17 Oct 14, 1983 Issue #18 Feb 23, 1984 Issue #19 May 17, 1984 Issue #20 Aug 30, 1984