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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 4); 2 (, 1 to 4); 3 (, 1 to 4); 4 (, 1 to 4); 5 (, 1 to 4); 6 (, 1 to 5); 7 (, 1 to 5); 8 (, 1 to 5); 9 (, 1 to 5); 10 (, 1 to 5); 11 (, 1 to 5); 12 (, 1 to 5); 13 (, 1 to 5); 14 (, 1 to 5); 15 (, 1 to 5); 16 (, 1); 17 (, 1 to 5); 18 (, 1 to 5); 19 (, 1 to 5); 20 (, 1 to 5); 21 (, 1 to 5); 22 (, 1 to 5); 23 (, 1 to 5); 24 (, 1 to 5); 25 (, 1 to 5); 26 (, 1 to 6); 27 (, 1 to 6); 28 (, 1 to 4, 5-6); 29 (, 1 to 6); 30 (, 1 to 6); 31 (, 1 to 6); 32 (, 1 to 6); 33 (, 1 to 6); 34 (, 1 to 6); 35 (, 1 to 8); 36 (, 1 to 8); 37 (, 1 to 8); 38 (, 1 to 8); 39 (, 1 to 12); 40 (, 1 to 12); 41 (, 1 to 12); 42 (, 1 to 12); 43 (, 1 to 12); 44 (, 1 to 12); 45 (, 1 to 12); 46 (, 1 to 12); 47 (, 1 to 12); 48 (, 1 to 12, 14); 49 (, 1 to 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, 6, 8 to 12); 62 (, 1 to 12); 63 (, 1 to 12); 64 (, 1 to 12); 65 (, 1 to 12); 66 (, 1 to 3, 5 to 12); 67 (, 1 to 5); 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; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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Internet Archive
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Preserved
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2025-08-08
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1 to 48
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 67
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 60
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Portico
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Preserved
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2026-02-12
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Preserved : 1970: 1(1-4), 1971: 2(1-4), 1971/1972: 3(1-4), 1972: 4(1-4), 1973: 5(1-4), 1973/1974: 6(1-5), 1974: 7(1-5), 1974/1975: 8(1-5), 1975: 9(1-5), 1975/1976: 10(1-5), 1976: 11(1-5), 1976/1977: 12(1-5), 1977: 13(1-5), 1977/1978: 14(1-5), 1978: 15(1-5), 1978: 16(1), 1978/1979: 17(1-5), 1979: 18(1-5), 1980: 19(1-5), 1980/1981: 20(1-5), 1981: 21(1-5), 1981/1982: 22(1-5), 1982: 23(1-5), 1982/1983: 24(1-5), 1983: 25(1-5), 1984: 26(1-6), 1985: 27(1-6), 1986: 28(1-6), 1987: 29(1-6), 1988: 30(1-6), 1989/1990: 31(1-6), 1990: 32(1-6), 1991: 33(1-6), 1992: 34(1-6), 1992/1993: 35(1-8), 1994: 36(1-8), 1995: 37(1-8), 1996: 38(1-8), 1997: 39(1-12), 1998: 40(1-12), 1999: 41(1-12), 2000: 42(1-12), 2001: 43(1-12), 2002: 44(1-12), 2003: 45(1-12), 2004: 46(1-2, S 2, 3-12), 2005: 47(1, S 1, 2-12), 2006: 48(1-12), 2007: 49(1-12), 2008: 50(1-12), 2009: 51(1-12), 2010: 52(1-12), 2011: 53(1-12), 2012: 54(1-9, 11-12), 2013: 55(1-2, S 2, 3-12), 2014: 56(1, S 1, 2-12), 2015: 57(1, S 1, 2-12), 2016: 58(1-12), 2017: 59(1-12), 2018: 60(1-2, S 2, 3-12), 2019: 61(1, S 1, 2-12), 2019/2020: 62(1, S 1, 2-12), 2021: 63(1, S 1, 2-12), 2022: 64(1, S 1, 2-12), 2023: 65(S 1, 2-12), 2024: 66(1, S 1, 2-11), 2025: 67(1, S 1, 2-12)
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LOCKSS Archive
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In Progress
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2026-02-09
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61
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National Library of the Netherlands
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Preserved
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2024-12-15
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Preserved : 38 (7, 8); 39 (1-12); 40 (1-12); 41 (1-12); 42 (1-12); 43 (supplement-1, 1-12); 44 (1-12); 45 (1-12); 46 (1-12); 47 (01, 2-12); 48 (1-9, 11, 12); 49 (1-4, 6-12); 50 (1-12); 51 (supplement-1, 1-11); 52 (1-12); 53 (supplement-1, 1-12); 54 (1-12); 55 (supplement-1, 1-9, 11, 12); 56 (1-12); 57 (1-12); 58 (supplement-1, 1-12); 59 (supplement-1, 1-12); 60 (supplement-1, 1-12); 61 (supplement-1, 1-12)
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : 4 (1 to 9, 11, 12); 5 (Suppl 1, 1 to 9, 11, 12); 6 (Suppl 1, 1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (Suppl 1, 1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (Suppl 1, 1 to 9, 11, 12); 46 (Suppl 2, 1 to 9, 11, 12); 47 (Suppl 1, 1 to 9, 11, 12); 48 (Suppl 2, 1 to 9, 11, 12); 49 (Suppl 2, 1 to 9, 11, 12); 51 (Suppl 1, 1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (Suppl 1, 1 to 9, 11, 12); 54 (Suppl 1, 1 to 9, 11, 12); 55 (Suppl 2, 1 to 9, 11, 12); 56 (Suppl 1, 1 to 9, 11, 12); 57 (Suppl 1, 1 to 9, 11, 12); 58 (Suppl 1, 1 to 9, 11, 12); 59 (Suppl 1, 1 to 9, 11, 12); 61 (Suppl 1, 1 to 9, 11, 12); 62 (Suppl 1, 1 to 9, 11, 12); 63 (Suppl 1, 1 to 9, 11, 12); 64 (Suppl 1, 1 to 9, 11, 12); 65 (Suppl 1, 1 to 9, 11, 12); 66 (Suppl 1, 1 to 9, 11, 12)
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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 4 (1 to 9, 11, 12); 5 (Suppl 1, 1 to 9, 11, 12); 6 (Suppl 1, 1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (Suppl 1, 1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (Suppl 1, 1 to 9, 11, 12); 46 (Suppl 2, 1 to 9, 11, 12); 47 (Suppl 1, 1 to 9, 11, 12); 48 (Suppl 2, 1 to 9, 11, 12); 49 (Suppl 2, 1 to 9, 11, 12); 51 (Suppl 1, 1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (Suppl 1, 1 to 9, 11, 12); 54 (Suppl 1, 1 to 9, 11, 12); 55 (Suppl 2, 1 to 9, 11, 12); 56 (Suppl 1, 1 to 9, 11, 12); 57 (Suppl 1, 1 to 9, 11, 12); 58 (Suppl 1, 1 to 9, 11, 12); 59 (Suppl 1, 1 to 9, 11, 12); 61 (Suppl 1, 1 to 9, 11, 12); 62 (Suppl 1, 1 to 9, 11, 12); 63 (Suppl 1, 1 to 9, 11, 12); 64 (Suppl 1, 1 to 9, 11, 12); 65 (Suppl 1, 1 to 9, 11, 12); 66 (Suppl 1, 1 to 9, 11, 12)
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