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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1 to 14); 2 (, 1 to 12); 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 12); 13 (, 1 to 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); 20 (, 1 to 12); 21 (, 1 to 12); 22 (, 1 to 12); 23 (, 1 to 12); 24 (, 1 to 12); 25 (, 1 to 12); 26 (, 1 to 12); 27 (, 1 to 12); 28 (, 1 to 12); 29 (, 1 to 12); 30 (, 1 to 12); 31 (, 1 to 12); 32 (, 1 to 12); 33 (, 1 to 12); 34 (, 1 to 12); 35 (, 1 to 12); 36 (, 1 to 12); 37 (, 1 to 12); 38 (, 1 to 12); 39 (, 1 to 12); 40 (, 1 to 12); 41 (, 1 to 12); 42 (, 1 to 12); 43 (, 1 to 9, 11, 12); 44 (, 1 to 12); 45 (, 1 to 12); 46 (, 1 to 12); 47 (, 1 to 12); 48 (, 1 to 12); 49 (, 1 to 10, 12); 50 (, 1 to 12); 51 (, 1 to 12); 52 (, 1 to 12); 53 (, 1 to 12); 54 (, 1 to 12); 55 (, 1 to 12); 56 (, 1 to 12); 57 (, 1 to 12); 58 (, 1 to 12); 59 (, 1 to 12); 60 (, 1 to 12); 61 (, 1 to 12); 62 (, 1 to 12); 63 (, 1 to 12); 64 (, 1 to 12); 65 (, 1 to 12); 66 (, 1 to 12); 67 (, 1 to 12); 68 (, 1 to 12); 69 (, 1 to 12); 70 (, 1 to 9, 11, 12); 71 (, 1 to 12); 72 (, 1 to 12); 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 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; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014
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Internet Archive
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Preserved
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2025-08-08
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1 to 72
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.55:1-12;vol.56:1-12,sup.s1;vol.57:1-12;vol.58:1-12,sup.s1;vol.59:1-12;vol.60:1-12,sup.s10,sup.s5,sup.s7;vol.61:1-12,sup.s5,sup.s6;vol.62:1-12,sup.s1,sup.s2,sup.s3;vol.63:1-12,sup.s1,sup.s2;vol.64:1-12,sup.s1,sup.s2,sup.s3,sup.s4;vol.65:1-12,sup.s1,sup.s2,sup.s3;vol.66:1-12,sup.s1,sup.s2;vol.67:1-12,sup.s1,sup.s2;vol.68:1-12,sup.s1,sup.s2;vol.69:1-12,sup.s1;vol.70:1-12,sup.s1,sup.s2;vol.71:1-12,sup.S1;vol.72:1-12,sup.S1
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Portico
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Preserved
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2026-02-12
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Preserved : 1942/1943: 1(1-14), 1944: 2(1-12), 1945: 3(1-12), 1946: 4(1-12), 1947: 5(1-12), 1948: 6(1-12), 1949: 7(1-12), 1950: 8(1-12), 1951: 9(1-12), 1952: 10(1-12), 1953: 11(1-12), 1954: 12(1-12), 1955: 13(1-12), 1956: 14(1-12), 1957: 15(1-12), 1958: 16(1-12), 1959: 17(1-12), 1960: 18(1-12), 1961: 19(1-12), 1962: 20(1-12), 1963: 21(1-12), 1964: 22(1-12), 1965: 23(1-12), 1966: 24(1-12), 1967: 25(1-12), 1968: 26(1-12), 1969: 27(1-12), 1970: 28(1-12), 1971: 29(1-12), 1972: 30(1-12), 1973: 31(1-12), 1974: 32(1-12), 1975: 33(1-12), 1976: 34(1-12), 1977: 35(1-12), 1978: 36(1-12), 1979: 37(1-12), 1980: 38(1-12), 1981: 39(1-12), 1982: 40(1-12), 1983: 41(1-12), 1984: 42(1-12), 1985: 43(1-9, 11-12), 1986: 44(1-12), 1987: 45(1-12), 1988: 46(1-12), 1989: 47(1-12), 1990: 48(1-12), 1991: 49(1-10, 12), 1992: 50(1-12), 1993: 51(1-12), 1994: 52(1-2, 2_p1, 3-12), 1995: 53(1-12), 1996: 54(1-12), 1997: 55(1-12), 1998: 56(1-12), 1999: 57(1-12), 2000: 58(1-12), 2001: 59(1-12), 2002: 60(1-12), 2003: 61(1-12), 2004: 62(1-12), 2005: 63(1-12), 2006: 64(1-12), 2007: 65(1-12), 2008: 66(1-12), 2009: 67(1-12), 2010: 68(1-12), 2011: 69(1-12), 2012: 70(1-12), 2013: 71(1, S1, 2-12), 2014: 72(1, S1, 2-12)
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CLOCKSS Archive
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Preserved
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2026-02-09
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49 to 72
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LOCKSS Archive
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Preserved
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2026-02-09
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66 to 82
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CLOCKSS Archive
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In Progress
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2026-02-09
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66, 74, 75, 77 to 83
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CLOCKSS Archive
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Preserved
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2026-02-09
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67 to 73, 76
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LOCKSS Archive
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In Progress
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2026-02-09
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83
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Portico
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Preserved
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2026-02-12
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Preserved : 2024: 82(12), 2025: 83(s_1-2, 6-12), 2026: 84(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1943: 1(1-14), 1944: 2(1-12), 1945: 3(1-12), 1946: 4(1-12), 1947: 5(1-12), 1948: 6(1-12), 1949: 7(1-12), 1950: 8(1-12), 1951: 9(1-12), 1952: 10(1-12), 1953: 11(1-12), 1954: 12(1-12), 1955: 13(1-12), 1956: 14(1-12), 1957: 15(1-12), 1958: 16(1-12), 1959: 17(1-12), 1960: 18(1-12), 1961: 19(1-12), 1962: 20(1-12), 1963: 21(1-12), 1964: 22(1-12), 1965: 23(1-12), 1966: 24(1-12), 1967: 25(1-12), 1968: 26(1-12), 1969: 27(1-12), 1970: 28(1-12), 1971: 29(1-12), 1972: 30(1-12), 1973: 31(1-12), 1974: 32(1-12), 1975: 33(1-12), 1976: 34(1-12), 1977: 35(1-12), 1978: 36(1-12), 1979: 37(1-12), 1980: 38(1-12), 1981: 39(1-12), 1982: 40(1-12), 1983: 41(1-12), 1984: 42(1-12), 1985: 43(1-9, 11-12), 1986: 44(1-12), 1987: 45(1-12), 1988: 46(1-12), 1989: 47(1-12), 1990: 48(1-12), 1991: 49(1-10, 12), 1992: 50(1-12), 1993: 51(1-12), 1994: 52(1-12), 1995: 53(1-12), 1996: 54(1-12), 1997: 55(1-12), 1998: 56(1-12), 1999: 57(1-12), 2000: 58(1-12), 2001: 59(1-12), 2002: 60(1-12), 2003: 61(1-12), 2004: 62(1-12), 2005: 63(1-12), 2006: 64(1-12), 2007: 65(1-12), 2008: 66(1-12), 2009: 67(1-12), 2010: 68(1-12), 2011: 69(1-12), 2012: 70(1-12), 2013: 71(1-12), 2014: 72(1-12), 2015: 73(1-12), 2016: 74(1-12), 2017: 75(1-12), 2018: 76(1-12), 2019: 77(1-12), 2020: 78(1-12), 2021: 79(1-12), 2022: 80(1-12), 2023: 81(1-3)
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National Digital Preservation Program, China
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Preserved
|
2025-10-23
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Preserved : 6 (, 1 to 9, 11, 12); 7 (, 1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (, 1 to 9, 11, 12); 57 (1 to 9, 11, 12); 58 (, 1 to 9, 11, 12); 59 (1 to 9, 11, 12); 61 (, 1 to 9, 11, 12); 62 (, 1 to 9, 11, 12); 63 (, 1 to 9, 11, 12); 64 (, 1 to 9, 11, 12); 65 (, 1 to 9, 11, 12); 66 (, 1 to 9, 11, 12); 67 (, 1 to 9, 11, 12); 68 (, 1 to 9, 11, 12); 69 (, 1 to 9, 11, 12); 71 (, 1 to 9, 11, 12); 72 (, 1 to 9, 11, 12)
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National Digital Preservation Program, China
|
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Preserved
|
2025-12-04
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Preserved : 6 (, 1 to 9, 11, 12); 7 (, 1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (, 1 to 9, 11, 12); 57 (1 to 9, 11, 12); 58 (, 1 to 9, 11, 12); 59 (1 to 9, 11, 12); 61 (, 1 to 9, 11, 12); 62 (, 1 to 9, 11, 12); 63 (, 1 to 9, 11, 12); 64 (, 1 to 9, 11, 12); 65 (, 1 to 9, 11, 12); 66 (, 1 to 9, 11, 12); 67 (, 1 to 9, 11, 12); 68 (, 1 to 9, 11, 12); 69 (, 1 to 9, 11, 12); 71 (, 1 to 9, 11, 12); 72 (, 1 to 9, 11, 12)
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National Digital Preservation Program, China
|
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Preserved
|
2025-10-23
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Preserved : 8 (2 to 9, 11, 12); 73 (suppl_1, 1 to 9, 11, 12); 74 (1 to 9, 11, 12); 75 (suppl_1, 1 to 9, 11, 12); 76 (Supplement_1, 1 to 9, 11, 12); 77 (1 to 9, 11, 12); 78 (Supplement_1, 1 to 9, 11, 12); 79 (Supplement_1, 1 to 9, 11, 12)
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National Digital Preservation Program, China
|
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Preserved
|
2025-12-04
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Preserved : 8 (2 to 9, 11, 12); 73 (suppl_1, 1 to 9, 11, 12); 74 (1 to 9, 11, 12); 75 (suppl_1, 1 to 9, 11, 12); 76 (Supplement_1, 1 to 9, 11, 12); 77 (1 to 9, 11, 12); 78 (Supplement_1, 1 to 9, 11, 12); 79 (Supplement_1, 1 to 9, 11, 12)
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British Library
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Preserved
|
2019-09-18
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Preserved : 54 (5; 8 to 9), 56 (3), 57 (1; 4 to 5), 58 (3; 8; 10 to 11; S1), 59 (8), 60 (5; 7; S10), 61 (5 to 6; 9; 12; S6), 62 (1; 4 to 7; 11; S3), 63 (2; 9), 65 (2 to 3), 66 (2 to 3; 10; 12), 67 (5; 12), 68 (10; 12; S2), 69 (1 to 2; 11), 70 (4; 10), 72 (7), 73 (4; 6; 8; 10 to 11; S1; S3), 74 (1 to 2; 5 to 11), 75 (1 to 4; 8; S1), 76 (7), 77 (8)
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