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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 8 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 9 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 10 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 11 (, 1 to 6); 12 (, 1, 2, 3-4, 5-6); 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 (, 2 to 4); 21 (, 1 to 4); 22 (, 1 to 4); 23 (, 1 to 4); 24 (, 1 to 4); 25 (, 1, 2, 3-4, 5); 26 (, 1 to 5); 27 (, 1 to 5); 28 (, 1-2, 3 to 6); 29 (, 1 to 6); 30 (, 1 to 6); 31 (, 1 to 14); 32 (, 1 to 14); 33 (, 2 to 14); 34 (, 1 to 14); 35 (, 1 to 8, 9-10, 11-12, 13-14); 36 (, 1 to 14); 37 (, 1 to 14); 38 (, 1); 39 (, 1); 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
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Portico
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Preserved
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2026-02-12
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Preserved : 2006: 21(1-4), 2007: 22(1-4), 2008: 23(1-4), 2009: 24(1-4), 2010: 25(1-5), 2011: 26(1-4), 2012: 27(1-5), 2013: 28(1-6), 2014: 29(1-6), 2015: 30(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1993: 8(1-12), 1994: 9(1-12), 1995: 10(1-12), 1996: 11(1-6), 1997: 12(1-6), 1998: 13(1-4), 1999: 14(1-4), 2000: 15(1-4), 2001: 16(1-4), 2002: 17(1-4), 2003: 18(1-4), 2004: 19(1-4), 2005: 20(1-4), 2006: 21(1-4), 2007: 22(1-4), 2008: 23(1-4), 2009: 24(1-4), 2010: 25(1-2), 2011: 26(1-4), 2012: 27(1-4), 2013: 28(1-4), 2014: 29(1-4), 2015: 30(1-sup8), 2016: 31(1-14), 2017: 32(1-14), 2018: 33(1-14), 2019: 34(1-14), 2020: 35(1-14), 2021: 36(1-14), 2022: 37(1-14), 2023: 38(1), 2024: 39(1), 2025: 40(1), 2026: 41(1)
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CLOCKSS Archive
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Preserved
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2026-02-09
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25 to 30
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LOCKSS Archive
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Preserved
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2026-02-09
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27
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LOCKSS Archive
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Preserved
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2026-02-09
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8 to 39
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CLOCKSS Archive
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Preserved
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2026-02-09
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ahead-of-print, 8 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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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 6); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1, 2, 3-4, 5); 26 (1 to 4); 27 (1 to 5); 28 (1-2, 3 to 6); 29 (B1, 1 to 6); 31 (sup1, 1 to 9, 11 to 14); 32 (1 to 9, 11 to 14); 33 (1 to 9, 11 to 14); 34 (1 to 9, 11 to 14); 35 (1 to 8, 9-1, 11-12, 13-14); 36 (1 to 9, 11 to 14); 37 (1 to 9, 11, 12)
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Library of Congress
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Preserved
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2025-04-07
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32 (3 to 14); 33 (1 to 14); 34 (1 to 14); 35 (1 to 9-10, 11-12, 13-14); 36 (1 to 14); 37 (1 to 14); 38 (1)
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