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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 4 (1 to 3); 5 (, 1, 2-3); 6 (, 1 to 3); 7 (, 1-2, 3); 8 (, 1-3); 9 (, 1-2, 3); 10 (, 1-3); 11 (, 1-3); 12 (, 1-2, 3-4); 13 (, 1, 2, 3-4); 14 (, 1-3, 4); 15 (, 1 to 4); 16 (, 1-2, 3, 4); 17 (, 1, 2, 3-4); 18 (, 1 to 4); 20 (, 2-3, 4); 21 (, 1 to 4); 22 (, 1 to 4); 23 (, 1 to 4); 24 (, 1 to 4); 25 (, 1 to 4); 26 (, 1 to 4); 27 (, 1 to 6); 28 (, 1 to 6); 29 (, 1 to 6); 30 (, 1 to 6); 31 (, 1 to 6); 32 (, 1 to 6); 33 (, 1, 3, 4); 1993; 1994; 1995; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023
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Portico
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Preserved
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2026-02-12
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Preserved : 1993: 4(1-3), 1994: 5(1-3), 1995: 6(1-3), 1996: 7(1-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 2000: 11(1-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 2002: 13(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 2003: 13(3-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 2005: 15(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 2006: 16(4), 2007: 17(1-4), 2008: 18(1-4), 2009: 19(1-4), 2010: 20(1-4), 2011: 21(1-4), 2012: 22(2, 4), 2013: 23(1-3), 2014: 24(1-4), 2015: 25(1-4), 2016: 26(1-4), 2017: 27(1-6), 2018: 28(1-6), 2019: 29(1-6), 2019/2020: 30(1-6), 2021: 31(1-6), 2022: 32(1, S 1, 2, S 2, 3-5), 2023: 33(1, 3-4)
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LOCKSS Archive
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In Progress
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2026-02-09
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22, 29
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LOCKSS Archive
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Preserved
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2026-02-09
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23 to 28
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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 : 11; 12 (3); 13 (1-3); 14 (1, 4); 15 (1-4); 16 (1-2, 3, 4); 17 (1, 2, 3-4); 18 (1-4); 19 (1-4); 20 (1, 2-3, 4); 21 (1-4); 22 (1-4); 23 (1-4); 24 (1-4); 25 (1-4); 26 (1-4); 27 (1-6); 28 (1-6); 29 (1-5)
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Library of Congress
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Preserved
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2025-04-07
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20 (1, 2-3, 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 30 (1 to 6); 31 (1 to 6); 32 (S1, 1, 2, S2, S3, 3 to 6)
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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 : 1; 2 (2, 4); 3 (1 to 6); 8 (1); 9 (3); 11 (1); 12 (3); 13 (1 to 3); 14 (1, 4); 15 (1 to 4); 16 (1, 3, 4); 17 (1 to 3); 18 (1 to 4); 19 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (Suppl 3, 1 to 6); 33 (1 to 6); 34 (1)
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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 : 1; 2 (2, 4); 3 (1 to 6); 8 (1); 9 (3); 11 (1); 12 (3); 13 (1 to 3); 14 (1, 4); 15 (1 to 4); 16 (1, 3, 4); 17 (1 to 3); 18 (1 to 4); 19 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (Suppl 3, 1 to 6); 33 (1 to 6); 34 (1)
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 15 (4); 16 (, 1-2, 3, 4); 17 (, 1, 2, 3-4); 18 (, 1 to 4); 19 (, 1 to 4); 20 (, 1); 2005; 2006; 2007; 2008; 2009; 2010
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CLOCKSS Archive
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Preserved
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2026-02-09
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4 to 33
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