ISSN Record 1826-9850

Preserved : 1 (1 to 12); 2 (, 1 to 14); 3 (, 1 to 12); 4 (, 1 to 12); 5 (, 1 to 12); 6 (, 1 to 12); 7 (, 1 to 12); 8 (, 1 to 12); 9 (, 1 to 12); 10 (, 1 to 12); 11 (, 1 to 12); 12 (, 1 to 11); 13 (, 1 to 9, 10-11, 12); 14 (, 1 to 12); 15 (, 1 to 12); 16 (, 1 to 12); 17 (, 1 to 12); 18 (, 1 to 12); 19 (, 1 to 12); 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996

1 to 7

Preserved : 1969/1971/1978: 1(2-7, 9-11), 1970/1972/1979: 2(1-5, 7-9, 11-14), 1973/1980: 3(1-3)

Preserved : 1980: 3(6-12), 1974/1981: 4(1-5, 7-12), 1975: 5(1-4)

Preserved : 1982: 5(7-12), 1976/1983: 6(1-6, 8-10), 1977/1984: 7(1-5, 7-12), 1985: 8(3-7, 10-12), 1986: 9(1-9, 11-12), 1987: 10(1-7, 9-12), 1988: 11(1-10, 12), 1989: 12(1-4, 6-11), 1990: 13(1-4, 6-11), 1991: 14(2-4, 6, 8-12), 1992: 15(2-6, 8-12), 1993: 16(2-12), 1994: 17(1-7, 9-11), 1995: 18(1-12), 1996: 19(2-12), 1997: 20(1, 3-12), 1998: 21(1-12), 1999: 22(1-12)

Preserved : 2001: 24(2)

Preserved : 2012: 35(2)

35, 39, 43 to 48

Preserved : 2014: 37(9)

Preserved : 2016: 39(4)

Preserved : 2022: 45(1-12), 2023: 46(1-12), 2024: 47(1-8, 10-12), 2025: 48(1-12)

Preserved : 43 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 46 (1 to 3, 4-5, 6, 7); 47 (1 to 7)

Preserved : 43 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 46 (1 to 3, 4-5, 6, 7); 47 (1 to 7)

Preserved : 20 (8-10); 21 (1, 3, 4, 6-12); 22 (1, 3, 4, 7, 9, 10)