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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 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 6); 14 (, 1 to 6); 15 (, 1 to 6); 16 (, 1 to 6); 17 (, 1 to 6); 18 (, 1 to 6); 19 (, 1 to 6); 20 (, 1 to 6); 21 (, 1 to 6); 22 (, 1 to 6); 23 (, 1 to 6); 24 (, 1 to 6); 25 (, 1 to 6); 26 (, 1 to 6); 27 (, 1 to 6); 28 (, 1 to 6); 29 (, 1 to 6); 30 (, 1 to 3 to 5, 6); 31 (, 1 to 6); 32 (, 1 to 6); 33 (, 1 to 6); 34 (, 1 to 6); 35 (, 1 to 6); 36 (, 1 to 6); 37 (, 1 to 6); 38 (, 1 to 6); 39 (, 1 to 6); 40 (, 1 to 6); 41 (, 1 to 6); 42 (, 1 to 6); 43 (, 2 to 6); 44 (, 1 to 6); 45 (, 1 to 6); 46 (, 1 to 6); 47 (, 1 to 5); 48 (, 1 to 6); 49 (, 1 to 6); 50 (, 1, 2, 4, 6); 51 (, 1 to 12); 52 (, 1 to 6, 9 to 11); 53 (, 1 to 5, 8 to 12); 54 (, 1, 2); 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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14 to 43
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 53
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Portico
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Preserved
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2026-02-12
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Preserved : 1981: 10(1-4), 1982: 11(1-4), 1983: 12(1-4), 1984: 13(1-6), 1985: 14(1-6), 1986: 15(1-6), 1987: 16(1-6), 1988: 17(1-6), 1989: 18(1-6), 1990: 19(1-6), 1991: 20(1-6), 1992: 21(1-6), 1993: 22(1-6), 1994: 23(1-6), 1995: 24(1-6), 1996: 25(1-6), 1997: 26(1-6), 1998: 27(1-6), 1999: 28(1, 3-6), 2000: 29(s_2, 6), 2001: 30(1-6), 2002: 31(1-6), 2003: 32(1-6), 2004: 33(1-6), 2004/2005: 34(1-6), 2006: 35(1-6), 2006/2007: 36(1-6), 2007/2008: 37(1-6), 2008/2009: 38(1-6), 2009/2010: 39(1-6), 2010/2011: 40(1-6), 2011/2012: 41(1-6), 2013: 42(1-6), 2013/2014: 43(1-6), 2014/2015: 44(1-6), 2016: 45(1-6), 2017: 46(1-6), 2018: 47(1-6), 2019: 48(1-6), 2020: 49(1-6), 2021: 50(1-6), 2022: 51(1-12), 2023: 52(1-12), 2024: 53(1-12), 2025: 54(1-12), 2026: 55(1-2)
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CLOCKSS Archive
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Preserved
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2026-02-09
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37 to 44
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CLOCKSS Archive
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In Progress
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2026-02-09
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45 to 54
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LOCKSS Archive
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In Progress
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2026-02-09
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54
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 47 (1); 2018
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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 6); 5 (Supplement_1, 1 to 6); 35 (suppl_1, 1 to 6); 36 (1 to 6); 37 (suppl_1, 1 to 6); 38 (suppl_1, 1 to 6); 39 (suppl_1, 1 to 6); 41 (suppl_1, 1 to 6); 42 (suppl_1, 1 to 6); 43 (suppl_1, 1 to 6); 44 (suppl_1, 1 to 6); 45 (suppl_1, 1 to 6); 46 (suppl_1, 1 to 6); 47 (suppl_1, 1 to 6); 48 (Supplement_1, 1 to 6); 49 (Supplement_1, 1 to 6); 51 (Supplement_1, 1 to 9, 11, 12); 52 (Supplement_1, 1 to 4, 6 to 9, 11, 12); 53 (Supplement_1, 1 to 9, 11, 12); 54 (Supplement_1, 1 to 9)
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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 6); 5 (Supplement_1, 1 to 6); 35 (suppl_1, 1 to 6); 36 (1 to 6); 37 (suppl_1, 1 to 6); 38 (suppl_1, 1 to 6); 39 (suppl_1, 1 to 6); 41 (suppl_1, 1 to 6); 42 (suppl_2, 1 to 6); 43 (suppl_1, 1 to 6); 44 (suppl_1, 1 to 6); 45 (suppl_1, 1 to 6); 46 (suppl_1, 1 to 6); 47 (suppl_1, 1 to 6); 48 (Supplement_1, 1 to 6); 49 (Supplement_1, 1 to 6); 51 (Supplement_1, 1 to 9, 11, 12); 52 (Supplement_1, 1 to 4, 6 to 9, 11, 12); 53 (Supplement_1, 1 to 9, 11, 12); 54 (Supplement_1, 1 to 9)
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British Library
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Preserved
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2019-09-18
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Preserved : 43 (1 to 6; S1 to S2), 44 (1 to 3; 5 to 6; S1 to S2), 45 (1 to 6; S2), 46 (1 to 6), 47 (1; 3 to 5; S3 to S4), 48 (3)
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