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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 8); 2 (, 1 to 8); 3 (, 1 to 8); 4 (, 1 to 8); 5 (, 1 to 8); 6 (, 1 to 10); 7 (, 1 to 10); 8 (, 1 to 12); 9 (, 1 to 12); 10 (, 1 to 12); 11 (, 1 to 12); 12 (, 1 to 5, 8 to 12); 14 (, 11); 17 (, 3); 22 (, 2 to 4, 6 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 8, 10 to 12); 32 (, 1 to 11); 33 (, 1 to 6, 8 to 12); 34 (, 1 to 4, 6, 8 to 10, 12); 35 (, 1 to 12); 36 (, 1 to 4, 10, 12); 37 (, 1 to 12); 38 (, 1 to 5, 7, 8, 10, 11); 39 (, 1 to 8, 12); 40 (, 1, 2); 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1999; 2002; 2007; 2008 (1); 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024
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Internet Archive
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Preserved
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2025-08-08
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3 to 22
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Portico
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Preserved
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2026-02-12
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Preserved : 1986: 1(1-8), 1987: 2(1-8), 1988: 3(1-8), 1989: 4(1-8), 1990: 5(1-3, 5-8), 1991: 6(1-10), 1992: 7(1-10), 1993: 8(1-12), 1994: 9(1-12), 1995: 10(1-12), 1996: 11(1-12), 1997: 12(11), 1998: 13(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1999: 14(6-12), 2000: 15(3-s_4, 6-7, 9, 12), 2001: 16(1, 4-5, 7, 9-12), 2002: 17(s_1-3, 6, 8, 12), 2003: 18(1-12), 2004: 19(1, 3-12), 2005: 20(1-12), 2006: 21(1-12), 2007: 22(1-12), 2007/2008: 23(1-12), 2008/2009: 24(1-12), 2009/2010: 25(1-12), 2010/2011: 26(1-12), 2011/2012: 27(1-12), 2012/2013: 28(1-12), 2014: 29(1-12), 2014/2015: 30(1-12), 2016: 31(1-12), 2016/2017: 32(1-12), 2018: 33(1-12), 2019: 34(1-12), 2020: 35(1-12), 2021: 36(1-12), 2022: 37(1-12), 2023: 38(1-12), 2024: 39(1-12), 2025: 40(1-12), 2026: 41(1-2)
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LOCKSS Archive
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Preserved
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2026-02-09
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20 to 39
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CLOCKSS Archive
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Preserved
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2026-02-09
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23 to 30
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CLOCKSS Archive
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In Progress
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2026-02-09
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31 to 40
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LOCKSS Archive
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In Progress
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2026-02-09
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40
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Scholars Portal
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Preserved
|
2025-09-02
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Preserved : 32 (8); 2017
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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 : ; 3 (1 to 9, 11, 12); 4 (Supplement_1, 1 to 8); 14 (11); 21 (suppl_1, 1 to 9, 11, 12); 22 (suppl_1, 1 to 9, 11, 12); 23 (suppl_1, 1 to 9, 11, 12); 24 (suppl_1, 1 to 9, 11, 12); 25 (suppl_1, 1 to 9, 11, 12); 26 (suppl_1, 1 to 9, 11, 12); 27 (suppl_2, 1 to 9, 11, 12); 28 (suppl_1, 1 to 9, 11, 12); 29 (suppl_1, 1 to 9, 11, 12); 31 (suppl_1, 1 to 9, 11, 12); 32 (suppl_1, 1 to 9, 11, 12); 33 (suppl_1, 1 to 9, 11, 12); 34 (Supplement_1, 1 to 9, 11, 12); 35 (Supplement_1, 1 to 9, 11, 12); 36 (Supplement_1, 1 to 9, 11, 12); 37 (Supplement_1, 1 to 9, 11, 12); 38 (Supplement_1, 1 to 9, 11, 12); 39 (1 to 7, 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 : ; 3 (1 to 9, 11, 12); 4 (Supplement_1, 1 to 9); 14 (11); 21 (suppl_1, 1 to 9, 11, 12); 22 (suppl_1, 1 to 9, 11, 12); 23 (suppl_1, 1 to 9, 11, 12); 24 (suppl_1, 1 to 9, 11, 12); 25 (suppl_1, 1 to 9, 11, 12); 26 (suppl_1, 1 to 9, 11, 12); 27 (suppl_2, 1 to 9, 11, 12); 28 (suppl_1, 1 to 9, 11, 12); 29 (suppl_1, 1 to 9, 11, 12); 31 (suppl_1, 1 to 9, 11, 12); 32 (suppl_1, 1 to 9, 11, 12); 33 (suppl_1, 1 to 9, 11, 12); 34 (Supplement_1, 1 to 9, 11, 12); 35 (Supplement_1, 1 to 9, 11, 12); 36 (Supplement_1, 1 to 9, 11, 12); 37 (Supplement_1, 1 to 9, 11, 12); 38 (Supplement_1, 1 to 9, 11, 12); 39 (1 to 7, 9)
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National Digital Preservation Program, China
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Preserved
|
2025-12-04
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Preserved : 35
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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 : 1 (1-8); 2 (2-8); 3 (3-8); 4 (2-8); 5 (2-8); 6 (1-10); 7 (2-10); 8 (1-12); 9 (1-12); 10 (1-12)
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British Library
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Preserved
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2019-09-18
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Preserved : 17 (3), 29 (1 to 9; 11 to 12), 30 (1 to 6; 8 to 12; S1), 31 (1 to 8; 10 to 12; S1), 32 (1 to 6), 33 (2; 5 to 8; 12; S1), 34 (1; 3)
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