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Issues
- #4 June 1988 [603] 4 June 1988
- #4 March 1978 [76] 4 March 1978
- #4 March 1989 [642] 4 March 1989
- #4 May 1985 [442] 4 May 1985
- #4 May 1991 [755] 4 May 1991
- #4 November 1978 [111] 4 November 1978
- #4 November 1989 [677] 4 November 1989
- #4 October 1980 [203] 4 October 1980
- #4 October 1986 [516] 4 October 1986
- #4 September 1982 [303] 4 September 1982
- #5 April 1980 [182] 5 April 1980
- #5 April 1986 [490] 5 April 1986
- #5 August 1978 [98] 5 August 1978
- #5 August 1989 [664] 5 August 1989
- #5 December 1981 [264] 5 December 1981
- #5 December 1987 [577] 5 December 1987
- #5 December 1992 [837] 5 December 1992
- #5 February 1977 [20] 5 February 1977
- #5 February 1983 [325] 5 February 1983
- #5 January 1980 [169] 5 January 1980
- #5 January 1985 [425] 5 January 1985
- #5 January 1991 [738] 5 January 1991
- #5 July 1980 [190] 5 July 1980
- #5 July 1986 [503] 5 July 1986
- #5 June 1982 [290] 5 June 1982
- #5 March 1977 [24] 5 March 1977
- #5 March 1983 [329] 5 March 1983
- #5 March 1988 [590] 5 March 1988
- #5 May 1979 [134] 5 May 1979
- #5 May 1984 [390] 5 May 1984
- #5 May 1990 [703] 5 May 1990
- #5 November 1977 [59] 5 November 1977
- #5 November 1983 [364] 5 November 1983
- #5 November 1988 [625] 5 November 1988
- #5 October 1985 [464] 5 October 1985
- #5 October 1991 [777] 5 October 1991
- #5 September 1981 [251] 5 September 1981
- #5 September 1987 [564] 5 September 1987
- #5 September 1992 [824] 5 September 1992
- #6 April 1985 [438] 6 April 1985
- #6 April 1991 [751] 6 April 1991
- #6 August 1977 [46] 6 August 1977
- #6 August 1983 [351] 6 August 1983
- #6 August 1988 [612] 6 August 1988
- #6 December 1980 [212] 6 December 1980
- #6 December 1986 [525] 6 December 1986
- #6 February 1982 [273] 6 February 1982
- #6 February 1988 [586] 6 February 1988
- #6 February 1993 [845] 6 February 1993
- #6 January 1979 [117] 6 January 1979
- #6 January 1990 [686] 6 January 1990
- #6 July 1985 [451] 6 July 1985
- #6 July 1991 [764] 6 July 1991
- #6 June 1981 [238] 6 June 1981
- #6 June 1987 [551] 6 June 1987
- #6 June 1992 [811] 6 June 1992
- #6 March 1982 [277] 6 March 1982
- #6 March 1993 [849] 6 March 1993
- #6 May 1978 [85] 6 May 1978
- #6 May 1989 [651] 6 May 1989
- #6 November 1976 [7] 6 November 1976
- #6 November 1982 [312] 6 November 1982
- #6 October 1979 [156] 6 October 1979
- #6 October 1984 [412] 6 October 1984
- #6 October 1990 [725] 6 October 1990
- #6 September 1980 [199] 6 September 1980
- #6 September 1986 [512] 6 September 1986
- #7 April 1979 [130] 7 April 1979
- #7 April 1984 [386] 7 April 1984
- #7 April 1990 [699] 7 April 1990
- #7 August 1982 [299] 7 August 1982
- #7 December 1985 [473] 7 December 1985
- #7 December 1991 [786] 7 December 1991
- #7 February 1981 [221] 7 February 1981
- #7 February 1987 [534] 7 February 1987
- #7 January 1978 [68] 7 January 1978
- #7 January 1984 [373] 7 January 1984
- #7 January 1989 [634] 7 January 1989
- #7 July 1979 [143] 7 July 1979
- #7 July 1984 [399] 7 July 1984
- #7 July 1990 [712] 7 July 1990
- #7 June 1986 [499] 7 June 1986
- #7 March 1981 [225] 7 March 1981
- #7 March 1987 [538] 7 March 1987
- #7 March 1992 [798] 7 March 1992
- #7 May 1977 [33] 7 May 1977
- #7 May 1983 [338] 7 May 1983
- #7 May 1988 [599] 7 May 1988
- #7 November 1981 [260] 7 November 1981
- #7 November 1987 [573] 7 November 1987
- #7 November 1992 [833] 7 November 1992
- #7 October 1978 [107] 7 October 1978
- #7 October 1989 [673] 7 October 1989
- #7 September 1985 [460] 7 September 1985
- #7 September 1991 [773] 7 September 1991
- #8 April 1978 [81] 8 April 1978
- #8 April 1989 [647] 8 April 1989
- #8 August 1981 [247] 8 August 1981
- #8 August 1987 [560] 8 August 1987
- #8 August 1992 [820] 8 August 1992