ISSN Record 1938-1425

Preserved : 1974: 1

1 to 45

Preserved : 1978: 4, 1979: 5(1-2), 1980: 6(1-2), 1982: 7(1-6), 1983: 8(1-6), 1984: 9(1-6), 1985: 10(1-6, S 6), 1986: 11(1-6), 1987: 12(1-8), 1988: 13(1-12), 1989: 14(1-12), 1990: 15(1-12), 1991: 16(1-12), 1992: 17(1-12), 1993: 18(1-12), 1994: 19(1-12), 1995: 20(1-12), 1996: 21(1-12), 1997: 22(1-12), 1998: 23(1-12), 1999: 24(1-12), 2000: 25(3-12)

Preserved : 2008: 33(1-12), 2009: 34(1-12), 2010: 35(1-12), 2011: 36(1-12), 2012: 37(1-12), 2013: 38(1-12), 2014: 39(1-12), 2015/2016: 40(1-12), 2016: 41(1-12), 2017: 42(1-12), 2018: 43(1-12), 2019: 44(1-12), 2020: 45(1-12)

7 to 51

Preserved : 1988: 13(6, 8-10), 1989: 14(4, 10), 1990: 15(1, 3, 7, 9, 11), 1991: 16(6, 12), 1992: 17(10), 1993: 18(10, 12), 1994: 19(7-9), 1995: 20(4, 8, 11), 1996: 21(10), 1997: 22(1-12), 1998: 23(1-10, 12), 1999: 24(2-7, 10-12), 2000: 25(1-2, 4-6), 2001: 26(3-5, 7-11), 2002: 27(5, 9), 2003: 28(1-4, 7, 9, 11), 2004: 29(2, 12), 2005: 30(5), 2006: 31(1-2, 6-7, 10-11)

Preserved : 2008: 33(1-6, 8-9, 11-12), 2009: 34(1-12), 2010: 35(1-11), 2011: 36(5-6, 8, 10-11), 2012: 37(3, 5, 7, 11-12), 2013: 38(1-3, 8-12), 2014: 39(1-12), 2015: 40(4, 6-8), 2016: 41(1, 6, 8-11), 2017: 42(1, 3-7, 9), 2018: 43(1-12), 2019: 44(1-5, 8, 10), 2020: 45(4-9, 11-12), 2021: 46(1, 3-12), 2022: 47(1-12), 2023: 48(1-12), 2024: 49(1-2, 4-11), 2025: 50(3-12), 2026: 51(1)

Preserved : 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11); 49 (1 to 9, 11, 12)

Preserved : 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11); 49 (1 to 9, 11, 12)

44 (3 to 5, 7 to 12); 45 (1 to 12)