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Issues
- #1+4 printings April 1971
- #2 July 1971
- #3 September 1971
- #4 October 1971
- #5 April 1972
- #6 July 1972
- #7 August 1972
- #8 September 1972
- #9 October 1972
- #10 February 1973
- #11 April 1973
- #12 June 1973
- #13 August 1973
- #14 September 1973
- #15 October 1973
- #16 December 1973
- #17 February 1974
- #18 April 1974
- #19 June 1974
- #20 August 1974
- #21 September 1974
- #22 October 1974
- #23 December 1974
- #24 February 1975
- #25 June 1975
- #26 August 1975
- #27 September 1975
- #28 October 1975
- #29 December 1975
- #30 February 1976
- #31 May 1976
- #32 June 1976
- #33 August 1976
- #34 September 1976
- #35 October 1976
- #36 December 1976
- #37 February 1977
- #38 May 1977
- #39 June 1977
- #40 August 1977
- #41 September 1977
- #42 October 1977
- #43 December 1977
- #44 February 1978
- #45 May 1978
- #46 June 1978
- #47 August 1978
- #48 September 1978
- #49 October 1978
- #50 December 1978
- #51 February 1979
- #52 May 1979
- #53 June 1979
- #54 August 1979
- #55 September 1979
- #56 October 1979
- #57 December 1979
- #58 February 1980
- #59 May 1980
- #60 June 1980
- #61 August 1980
- #62 September 1980
- #63 October 1980
- #64 December 1980
- #65 February 1981
- #66 May 1981
- #67 June 1981
- #68 August 1981
- #69 September 1981
- #70 October 1981
- #71 December 1981
- #72 February 1982
- #73 May 1982
- #74 July 1982
- #75+1 printing September 1982
- #76+1 printing November 1982
- #77+1 printing January 1983