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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 6); 11 (, 1 to 6); 12 (, 1 to 6); 13 (, 1 to 6); 14 (, 1 to 8); 15 (, 1 to 12); 16 (, 1 to 4, 5-6, 7, 8-9, 10 to 12); 17 (, 1, 2-4, 5, 7 to 12); 18 (, 1 to 6, 7-9, 10 to 12); 19 (, 1 to 8, 9-10, 11, 12); 20 (, 1 to 6, 7-8, 9, 10-11, 12); 21 (, 1-3, 4 to 10, 12); 22 (, 1, 2, 3-4, 5, 6, 8 to 12); 23 (, 1 to 12); 24 (, 1 to 5, 6-7, 8 to 12); 25 (, 1 to 12); 26 (, 1 to 12); 27 (, 1 to 12); 28 (, 1 to 12); 29 (, 1 to 12); 30 (, 1 to 12); 31 (, 1 to 12); 32 (, 1 to 12); 33 (, 1 to 12); 34 (, 1 to 12); 35 (, 1 to 12); 36 (, 1 to 12); 37 (, 1 to 4, 5-6, 7 to 12); 38 (, 1); 39 (, 1); 1987; 1988; 1989; 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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Portico
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Preserved
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2026-02-12
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Preserved : 1987/1988: 1(1-4), 1988/1989: 2(1-4), 1989: 3(1-4), 1990: 4(1-4), 1991: 5(1-6), 1992: 6(1-6), 1993: 7(1-6), 1994: 8(1-6), 1995: 9(1-6), 1996: 10(1-6), 1997: 11(6)
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 32
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 40
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Portico
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Preserved
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2026-02-12
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Preserved : 2002: 16(11), 2003: 17(5)
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Portico
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Preserved
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2026-02-12
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Preserved : 2005: 19(7), 2006: 20(5-9), 2007: 21(5-8, 10), 2008: 22(1-12), 2009: 23(1-12), 2010: 24(1-12), 2011: 25(1-12), 2012: 26(2-5, 9-12), 2013: 27(1-5, 7-8, 10-12), 2014: 28(1-9, 11-12), 2015: 29(3-12), 2016: 30(1-12), 2017: 31(1-12), 2018: 32(1-12), 2019: 33(1-12), 2019/2020: 34(1-12), 2021: 35(1-12), 2022: 36(1-12), 2023: 37(2-12), 2024: 38(1), 2025: 39(1-2), 2026: 40(1)
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LOCKSS Archive
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In Progress
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2026-02-09
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33
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Library of Congress
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Preserved
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2025-04-07
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32 (1 to 12); 33 (1 to 12); 34 (1 to 12); 35 (1 to 12); 36 (1 to 12); 37 (1 to 5-6, 7 to 12); 38 (1)
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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 : 2 (1 to 7, 9, 12); 3 (1 to 9, 11, 12); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 8); 15 (1 to 9, 11, 12); 16 (1 to 5, 7, 8, 11, 12); 17 (1, 2, 5, 7 to 9, 11, 12); 18 (1 to 7, 11, 12); 19 (1 to 9, 11, 12); 21 (1, 4 to 9, 12); 22 (1 to 3, 5, 6, 8, 9, 11, 12); 23 (1 to 9, 11, 12); 24 (1 to 6, 8, 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, 12); 29 (1 to 9, 11, 12); 31 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 4, 5-6, 7 to 9, 11, 12); 38 (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 : 2 (1 to 7, 9, 12); 3 (1 to 9, 11, 12); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 8); 15 (1 to 9, 11, 12); 16 (1 to 5, 7, 8, 11, 12); 17 (1, 2, 5, 7 to 9, 11, 12); 18 (1 to 7, 11, 12); 19 (1 to 9, 11, 12); 21 (1, 4 to 9, 12); 22 (1 to 3, 5, 6, 8, 9, 11, 12); 23 (1 to 9, 11, 12); 24 (1 to 6, 8, 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, 12); 29 (1 to 9, 11, 12); 31 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 4, 5-6, 7 to 9, 11, 12); 38 (1)
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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 (1-6); 12 (1-6); 13 (1-3, 6); 14 (1-8); 15 (1-12); 16 (1-5, 7, 8, 10-12); 17 (1, 2, 5, 7-9); 18 (1, 3, 7, 10-12); 19 (1-8, 9-10, 11, 12); 20 (1-3, 5, 6, 7-8, 9, 10-11, 12); 21 (1-3, 4, 6-9, 10-11, 12); 22 (1, 2, 3-4, 5, 6-7, 8-12); 23 (2-12); 24 (1-5, 6-7, 8-12); 25 (1-12); 26 (1-12); 27 (1-12); 28 (1-12); 29 (1-12); 30 (1-12); 31 (1-12); 32 (1-12); 33 (1-9)
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