ISSN Record 1753-7789

Preserved : 1952: 1(1-6), 1953: 2(1-6), 1954: 3(1-6), 1955: 4(1-6), 1956: 5(1-6), 1957: 6(1-4), 1957: 7(1-4), 1957: 8(1-4), 1958: 9(1-4), 1958: 10(1-4), 1958: 11(1-4), 1959: 12(1-4), 1959: 13(1-4), 1959: 14(1-4), 1960: 15(1-4), 1960: 16(1-4), 1960: 17(1-4), 1961: 18(1-4), 1961: 19(1-4), 1961: 20(1-4), 1962: 21(1-4), 1962: 22(1-4), 1962: 23(1-4), 1963: 24(1-4), 1963: 25(1-4), 1963: 26(1-4), 1964: 27(1-4), 1964: 28(1-4), 1964: 29(1-4), 1965: 30(1-4), 1965: 31(1-4), 1965: 32(1-4), 1966: 33(1-4), 1966: 34(1-4), 1966: 35(1-4), 1967: 36(1-4), 1967: 37(1-4), 1967: 38(1-4), 1968: 39(1-4), 1968: 40(1-4), 1968: 41(1-4), 1969: 42(1-4), 1969: 43(1-4), 1969: 44(1-4), 1970: 45(1-4), 1970: 46(1-4), 1970: 47(1-4), 1971: 48(1-4), 1971/2018: 49(1-4), 1971: 50(1-4), 1972: 51(1-4), 1972: 52(1-3), 1972: 53(1-2), 1973: 54(1-4), 1973: 55(1-4), 1974: 56(1-4), 1974: 57(1-4), 1975: 58(1-4), 1975: 59(1-4), 1976: 60(1-4), 1976: 61(1-4), 1977: 62(1-4), 1977: 63(1-4), 1978: 64(1-4), 1978: 65(1-4), 1979: 66(1-4), 1979: 67(1-4), 1980: 68(1-4), 1980: 69(1-4), 1981: 70(1-4), 1981: 71(1-4), 1982: 72(1-4), 1982: 73(1-4), 1983: 74(1-4), 1983: 75(1-4), 1984: 76(1-4), 1984: 77(1-4), 1985: 78(1-6), 1985: 79(1-4), 1986: 80(1-6), 1986: 81(1-4), 1987: 82(1-5), 1987: 83(1-4), 1988: 84(1-6), 1988: 85(1-4), 1989: 86(1-6), 1989: 87(1-4), 1990: 88(1-6), 1990: 89(1-4), 1991: 90(1-6), 1991: 91(1-4)

33 to 50

Preserved : 1 (1 to 6); 2 (1 to 6); 3 (1 to 6); 4 (1 to 6); 5 (1 to 6); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 30 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1, 3, 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 50 (1 to 4); 51 (1 to 4); 52 (1 to 3); 53 (1, 2); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 60 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1 to 4); 70 (1 to 4); 71 (1 to 4); 72 (1 to 4); 73 (1 to 4); 74 (1 to 4); 75 (1 to 4); 76 (1 to 4); 77 (1 to 4); 78 (1 to 6); 79 (1 to 4); 80 (1 to 6); 81 (1 to 4); 82 (1 to 5); 83 (1 to 4); 84 (1 to 6); 85 (1 to 4); 86 (1 to 6); 87 (1 to 4); 88 (1 to 6); 89 (1 to 4); 90 (1 to 6); 91 (1 to 4)