Issues held: | , No.1(1977)-40(1977), 43(1977)-27(1979)-9(1980), 27(1980)-41(1980), 43(1980)-10(1981), 12(1981)-17(1981), 19(1981)-27(1981), 29(1981)-1(1983), 3(1983), 5(1983)-29(1983), 31(1983)-17(1984)-25(1984), 44(1984), 46(1984)-49(1986), 1(1987)-6(1988), 8(1988)-39(1988), 41(1988)-19(1989), 21(1989), 23(1989)-33(1989/90), 35(1990)-39(1990), 41(1990)-42(1990), 44(1990), 46(1990)-1(1992), 3(1992)-20(1992), 22(1992)-43(1992), 46(1992), 49(1992)-51(1992), 4(1993), 6(1993)-40(2004), 42(2004)-30(2007)
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