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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 6); 6 (, 1 to 6); 7 (, 1 to 6); 8 (, 1 to 6); 9 (, 1 to 6); 10 (, 1 to 4, 5-6, 7 to 9); 11 (, 1 to 9); 12 (, 1 to 3, 4-6, 7 to 12); 13 (, 1 to 12); 14 (, 1 to 4, 5-7, 8, 9, 10-12); 15 (, 1 to 12); 16 (, 1 to 10, 11-12); 17 (, 1 to 12); 18 (, 1, 4 to 12); 19 (, 1 to 7, 8-9, 10 to 12); 20 (, 1 to 12); 21 (, 1 to 12); 22 (, 1 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 24); 29 (, 1 to 24); 30 (, 1 to 24); 31 (, 1 to 24); 32 (, 1 to 24); 33 (, 1 to 36); 34 (, 1 to 36); 35 (, 1 to 36); 36 (, 1 to 18); 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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1 to 7
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 37
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Portico
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Preserved
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2026-02-12
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Preserved : 1992: 3(3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1995: 6(4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1997: 8(1-3, 5)
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Portico
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Preserved
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2026-02-12
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Preserved : 2001: 12(11), 2002: 13(3, 10)
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Portico
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Preserved
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2026-02-12
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Preserved : 2006: 17(10), 2007: 18(1, 4, 6-8)
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Portico
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Preserved
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2026-02-12
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Preserved : 2008: 19(1, S 1, 2-12), 2008/2009: 20(1-12), 2010: 21(1-12), 2011: 22(1-12), 2012: 23(1, 3-7, 11), 2013: 24(1-10, 12), 2014: 25(1-12), 2015: 26(2-12), 2016: 27(1-12), 2017: 28(1-24), 2018: 29(1-24), 2019: 30(1-24), 2019/2020: 31(1-24), 2021: 32(1-13, 15-24), 2022: 33(1-36), 2023: 34(1-36), 2024: 35(1-32, 35), 2025: 36(1-36), 2026: 37(1-4)
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LOCKSS Archive
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In Progress
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2026-02-09
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23, 30
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LOCKSS Archive
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Preserved
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2026-02-09
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24 to 29
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Library of Congress
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Preserved
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2025-04-07
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28 (6, 13, 14, 17, 21, 24); 29 (2, 3, 5 to 24); 30 (1 to 24); 31 (1 to 24); 32 (1 to 24); 33 (1 to 36); 34 (1 to 36); 35 (1 to 29); 36 (1, 2)
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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 to 5, 7 to 9); 2 (Suppl 1, 1 to 9, 11, 12); 3 (1 to 9, 11 to 19, 21 to 24); 8 (1 to 6); 9 (1 to 6); 11 (1 to 9); 12 (1 to 4, 7 to 9, 11, 12); 13 (1 to 9, 11, 12); 14 (1 to 5, 8, 9); 15 (1 to 9, 11, 12); 16 (1 to 9, 11); 17 (1 to 9, 11, 12); 18 (Suppl 1, 1, 4 to 9, 11, 12); 19 (Suppl 1, 1 to 8, 11, 12); 21 (1 to 9, 11, 12); 22 (1 to 9, 11, 12); 23 (1 to 9, 11, 12); 24 (1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1 to 9, 11 to 19, 21 to 24); 29 (1 to 9, 11 to 19, 21 to 24); 31 (1 to 9, 11 to 19, 21 to 24); 32 (1 to 9, 11 to 19, 21 to 24); 33 (1 to 9, 11 to 19, 21 to 29, 31 to 36); 34 (1 to 9, 11 to 19, 21 to 29, 31 to 36); 35 (1 to 9, 11 to 19, 21 to 29, 31 to 36)
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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 to 5, 7 to 9); 2 (Suppl 1, 1 to 9, 11, 12); 3 (1 to 9, 11 to 19, 21 to 24); 8 (1 to 6); 9 (1 to 6); 11 (1 to 9); 12 (1 to 4, 7 to 9, 11, 12); 13 (1 to 9, 11, 12); 14 (1 to 5, 8, 9); 15 (1 to 9, 11, 12); 16 (1 to 9, 11); 17 (1 to 9, 11, 12); 18 (Suppl 1, 1, 4 to 9, 11, 12); 19 (Suppl 1, 1 to 8, 11, 12); 21 (1 to 9, 11, 12); 22 (1 to 9, 11, 12); 23 (1 to 9, 11, 12); 24 (1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1 to 9, 11 to 19, 21 to 24); 29 (1 to 9, 11 to 19, 21 to 24); 31 (1 to 9, 11 to 19, 21 to 24); 32 (1 to 9, 11 to 19, 21 to 24); 33 (1 to 9, 11 to 19, 21 to 29, 31 to 36); 34 (1 to 9, 11 to 19, 21 to 29, 31 to 36); 35 (1 to 9, 11 to 19, 21 to 29, 31 to 36)
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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 : 8 (1-6); 9 (1-6); 10 (1-5, 7-9); 11 (1-9); 12 (1-4, 7-12); 13 (1-12); 14 (1-5, 8-10); 15 (1-12); 16 (1-10, 11-12); 17 (1-11); 18 (1-3, 4-6, 8-12); 19 (1-7, 8-9, 10-12); 20 (1-12); 21 (1-12); 22 (1-12); 23 (1-6, 8-12); 24 (1-12); 25 (1-12); 26 (1-12); 27 (1-12); 28 (1-24); 29 (1-24); 30 (1-22)
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