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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 (, 1-2, 3, 4); 10 (, 1-2, 3, 4-6); 11 (, 1 to 4); 12 (, 1 to 4, 5-6); 13 (, 1-3, 4, 5-6); 14 (, 1-2, 3-4, 5-6); 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, 2-3, 4 to 6); 24 (, 1, 2-3, 4 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 6); 31 (, 1 to 6); 32 (, 1 to 6); 33 (, 1 to 6); 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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Portico
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Preserved
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2026-02-12
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Preserved : 2000: 8(1-4), 2001: 9(1, 3-4), 2002: 10(1, 3-4), 2003: 11(1-4), 2004/2005: 12(1-5), 2005: 13(1, 4-5)
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Portico
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Preserved
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2026-02-12
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Preserved : 1991/1992: 1(1-4), 1993/1994: 2(1-4), 1995: 3(1-4), 1996: 4(1-4), 1997: 5(1, 3), 1998: 6(1-2), 1999: 7(2-3)
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 34
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Portico
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Preserved
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2026-02-12
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Preserved : 2001: 9(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 2002: 10(3)
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Portico
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Preserved
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2026-02-12
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Preserved : 2003: 11(4)
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Portico
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Preserved
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2026-02-12
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Preserved : 2005: 12(5-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 2006: 14(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 2008: 16(2, 5-6), 2009: 17(1-6), 2010: 18(1-6), 2011: 19(1-6), 2012: 20(2-3, 6), 2013: 21(1-6), 2014: 22(1-6), 2015: 23(2-6), 2016: 24(1-6), 2017: 25(1-6), 2018: 26(1-6), 2019: 27(1-6), 2020: 28(1-6), 2021: 29(1-6), 2022: 30(1-6), 2023: 31(1-6), 2024: 32(1-6), 2025: 33(1, 3-12), 2026: 34(1)
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LOCKSS Archive
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In Progress
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2026-02-09
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20, 27
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LOCKSS Archive
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Preserved
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2026-02-09
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21 to 26
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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 (1, 3, 4); 2 (1 to 6); 3 (1 to 6); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1, 3, 4); 11 (1 to 4); 12 (1 to 5); 13 (1, 4, 5); 14 (1, 3, 5); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1, 2, 4 to 6); 24 (1, 2, 4 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6)
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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 (1, 3, 4); 2 (1 to 6); 3 (1 to 6); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1, 3, 4); 11 (1 to 4); 12 (1 to 5); 13 (1, 4, 5); 14 (1, 3, 5); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1, 2, 4 to 6); 24 (1, 2, 4 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6)
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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 : 5 (2, 4); 6 (1-4); 7 (3, 4); 8 (1-4); 9 (1, 3, 4); 10 (1, 3, 4); 11 (1-4); 12 (1-5); 13 (1, 4, 5); 14 (1-2, 3-4, 5-6); 15 (1, 3-6); 16 (1-6); 17 (1-4, 6); 18 (1, 3-6); 19 (1-6); 20 (1-6); 21 (1-4, 6); 22 (1-3, 5, 6); 23 (1, 2-3, 4, 6); 24 (1, 2-3, 4-6); 25 (1-6); 26 (1-6); 27 (1-6)
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Library of Congress
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Preserved
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2025-04-07
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26 (2 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 30 (1 to 6); 31 (1 to 6); 32 (1 to 5)
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