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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 6); 5 (, 1 to 6); 6 (, 1 to 6); 7 (, 1 to 6); 8 (, 1 to 6); 9 (, 1 to 6); 10 (, 1 to 6); 11 (, 1 to 6); 12 (, 1 to 6); 13 (, 1 to 6); 14 (, 1 to 6); 15 (, 1 to 8); 16 (, 1 to 8); 17 (, 1 to 8); 18 (, 1 to 5, 6-7, 8); 19 (, 1 to 8); 20 (, 1 to 8); 21 (, 1 to 8); 22 (, 1 to 8); 23 (, 1 to 8); 24 (, 1 to 8); 25 (, 1 to 8); 26 (, 1 to 8); 27 (, 1 to 8); 28 (, 1 to 4, 5-6, 7, 8); 29 (, 1, 5, 6); 30 (, 1, 2-3, 4 to 6); 31 (, 1 to 6); 32 (, 1, 2, 3-4, 5-6); 33 (, 1, 3, 4, 5-6); 34 (, 1-2, 3, 4, 5-6); 35 (, 1 to 4); 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 16
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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), 1992/1993: 2(1-4), 1993: 3(1-4), 1993/1994: 4(1-6), 1994/1995: 5(1-6), 1995/1996: 6(1-5)
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 23, 25 to 28
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 36
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Portico
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Preserved
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2026-02-12
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Preserved : 1998: 7(5)
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Portico
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Preserved
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2026-02-12
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Preserved : 2001: 10(4), 2001: 11(3, 6), 2002: 12(1-2)
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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)
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Portico
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Preserved
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2026-02-12
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Preserved : 2005: 15(8), 2005/2006: 16(1-4, 6-8), 2006/2007: 17(1-8), 2007/2008: 18(1-8), 2008/2009: 19(1-8), 2009/2010: 20(1-8), 2011: 21(1-8), 2012: 22(1, 3-5), 2013: 23(1-5, 7), 2014: 24(1-7), 2015: 25(3-8), 2016: 26(1-8), 2017: 27(1-8), 2018: 28(1-8), 2019: 29(1-6), 2020: 30(1-6), 2021: 31(1-4, 6), 2022: 32(1-6), 2023: 33(1-6), 2024: 34(1-4), 2025: 35(1-6), 2026: 36(1)
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LOCKSS Archive
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In Progress
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2026-02-09
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24, 29
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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 : 6 (1-6); 7 (1-6); 8 (1-6); 9 (1-6); 10 (1-6); 11 (1-6); 12 (1-6); 13 (1-6); 14 (1-6); 15 (1-8); 16 (1-8); 17 (1-8); 18 (1-5, 6-7, 8); 19 (1-8); 20 (1-8); 21 (1-8); 22 (1-8); 23 (1-8); 24 (supplement-1, 1-8); 25 (1-8); 26 (1-8); 27 (1-8); 28 (1-4, 5-6, 7, 8); 29 (1-5); 64 (4)
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Library of Congress
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Preserved
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2025-04-07
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28 (3 to 5-6, 7, 8); 29 (1 to 6); 30 (1, 2-3, 4 to 6); 31 (1 to 6); 32 (1 to 3-4, 5-6); 33 (1-2, 3 to 5-6); 34 (1-2, 3, 4)
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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 6); 2 (1 to 8); 3 (1, 2-3, 4 to 6); 6; 7 (1 to 6); 8 (1 to 6); 9 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 8); 16 (1 to 8); 17 (1 to 8); 18 (1 to 6, 8); 19 (1 to 8); 21 (1 to 8); 22 (1 to 8); 23 (1 to 8); 24 (Suppl 1, 1 to 8); 25 (1 to 8); 26 (1 to 8); 27 (1 to 8); 28 (1 to 4, 5-6, 7, 8); 29 (1 to 6); 31 (1 to 6); 32 (1, 2, 3-4, 5-6); 33 (1-2, 3, 4, 5-6); 34 (1, 3 to 5)
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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 6); 2 (1 to 8); 3 (1, 2-3, 4 to 6); 6; 7 (1 to 6); 8 (1 to 6); 9 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 8); 16 (1 to 8); 17 (1 to 8); 18 (1 to 6, 8); 19 (1 to 8); 21 (1 to 8); 22 (1 to 8); 23 (1 to 8); 24 (Suppl 1, 1 to 8); 25 (1 to 8); 26 (1 to 8); 27 (1 to 8); 28 (1 to 4, 5-6, 7, 8); 29 (1 to 6); 31 (1 to 6); 32 (1, 2, 3-4, 5-6); 33 (1-2, 3, 4, 5-6); 34 (1, 3 to 5)
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