Issue #11 Jun 01, 1975 Issue #12 Nov 01, 1975 Issue #13 Jan 01, 1976 Issue #14 Apr 01, 1976 Issue #15 Jun 01, 1976 Issue #16 Aug 01, 1976 Issue #17 Nov 01, 1976 Issue #18 Jan 01, 1977 Issue #19 Apr 01, 1977 Issue #20 Jul 01, 1977 Issue #21 Sep 01, 1977 Issue #22 Nov 01, 1977 Issue #23 Jan 01, 1978 Issue #24 Apr 01, 1978 Issue #25 Aug 01, 1978 Issue #26 Nov 01, 1978 Issue #27 Jan 01, 1979 Issue #28 Mar 01, 1979 Issue #29 May 01, 1979 Issue #30 Jun 01, 1979