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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 6); 7 (, 1 to 6); 8 (, 1 to 6); 9 (, 1 to 6); 10 (, 1 to 6); 11 (, 1 to 6); 12 (, 1 to 8); 13 (, 1 to 6, 7-8); 14 (, 1 to 3, 4-6, 7, 8); 15 (, 1 to 3, 4-6); 16 (, 1 to 6); 17 (, 1 to 4, 5-6); 18 (, 1 to 4, 5-6); 19 (, 1 to 6); 20 (, 1 to 6); 21 (, 1 to 6); 22 (, 1 to 6); 23 (, 1 to 6); 24 (, 1 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, 2-3, 4 to 6); 33 (, 1 to 6); 34 (, 1 to 6); 35 (, 1 to 4, 5-6); 36 (, 1 to 6); 37 (, 1 to 6); 38 (, 1-2, 3 to 6); 39 (, 1, 2); 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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Internet Archive
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Preserved
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2025-08-08
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1 to 19
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Portico
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Preserved
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2026-02-12
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Preserved : 1987: 1(1-4), 1988: 2(1-4), 1989: 3(1-4), 1990: 4(1-4), 1991: 5(1-4), 1992: 6(1-6), 1993: 7(1-6), 1994: 8(1-6), 1995: 9(1-6), 1996: 10(1-6), 1997: 11(3, 5), 1998: 12(1-4), 1999: 13(4, 7-8), 2000: 14(3-6), 2001: 15(1-2)
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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(6)
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Portico
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Preserved
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2026-02-12
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Preserved : 2007: 21(3-4, 6), 2008: 22(1-6), 2009: 23(1-6), 2010: 24(1-6), 2011: 25(1-6), 2012: 26(1, 3-6), 2013: 27(1-4, 6), 2014: 28(1-5), 2015: 29(2-6), 2016: 30(1-6), 2017: 31(1-6), 2018: 32(1-6), 2019: 33(1-6), 2019/2020: 34(1-6), 2021: 35(1-6), 2022: 36(1-6), 2023: 37(1-6), 2024: 38(1-6), 2025: 39(2-6), 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 (2-3, 4 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 5-6); 36 (1 to 6); 37 (1 to 6); 38 (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 : 2 (1 to 6); 3 (1 to 6); 11 (1 to 6); 12 (1 to 8); 13 (1 to 7); 14 (1 to 4, 7, 8); 15 (1 to 4); 16 (1 to 6); 17 (1 to 5); 18 (1 to 5); 19 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 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, 2-3, 4 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 4, 5-6); 36 (1 to 6); 37 (1 to 6); 38 (1, 3 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 : 2 (1 to 6); 3 (1 to 6); 11 (1 to 6); 12 (1 to 8); 13 (1 to 7); 14 (1 to 4, 7, 8); 15 (1 to 4); 16 (1 to 6); 17 (1 to 5); 18 (1 to 5); 19 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 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, 2-3, 4 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 4, 5-6); 36 (1 to 6); 37 (1 to 6); 38 (1, 3 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 : 11 (1-6); 12 (1-8); 13 (1-7); 14 (1-4, 7, 8); 15 (1-4); 16 (1-6); 17 (1-5); 18 (2-4, 5-6); 19 (1-6); 20 (1-6); 21 (1-6); 22 (1, 3-6); 23 (1-6); 24 (1-6); 25 (1-6); 26 (1-6); 27 (1-6); 28 (1-6); 29 (1-6); 30 (1-6); 31 (1-6); 32 (1, 2-3, 4-6); 33 (1-6)
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