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Issues
- #1 December 1969
- #2 March 1970
- #3 June 1970
- #4 September 1970
- #5 November 1970
- #6 February 1971
- #7 May 1971
- #8 August 1971
- #9 September 1971
- #10 November 1971
- #11 February 1972
- #12 May 1972
- #13 August 1972
- #14 September 1972
- #15 October 1972
- #16 December 1972
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- #19 July 1973
- #20 August 1973
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- #28 October 1974
- #29 December 1974
- #30 February 1975
- #31 May 1975
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- #36 December 1975
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- #44 November 1976
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- #54 December 1977
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- #56 March 1978
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- #79+5 printings September 1980
- #80 February 1981
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- #82 August 1981
- #83 October 1981
- #84 February 1982
- #85 May 1982
- #86 August 1982
- #87+1 printing October 1982
- #88+1 printing January 1983
- #89+1 printing May 1983
- #90+1 printing August 1983
- #91+1 printing October 1983
- #92+1 printing December 1983
- #93+1 printing February 1984
- #94+1 printing April 1984
- #95+1 printing June 1984
- #96+1 printing August 1984
- #97+1 printing October 1984
- #98+1 printing December 1984
- #99+1 printing February 1985
- #100+1 printing April 1985