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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 12 (1, 2); 13 (, 1, 2); 14 (, 1); 15 (, 1, 2); 16 (, 1, 2); 17 (, 1, 2); 18 (, 1, 2); 19 (, 1, 2); 20 (, 1, 2); 21 (, 1, 2); 22 (, 1, 2); 23 (, 1, 2); 24 (, 1, 2); 25 (, 1 to 4); 26 (, 1 to 4); 27 (, 1, 2, 3-4); 28 (, 1-2, 3, 4); 29 (, 1 to 4); 30 (, 1 to 4); 31 (, 1 to 4); 32 (, 1 to 4); 33 (, 1 to 4); 34 (, 1 to 4); 35 (, 1 to 4); 36 (, 1 to 4); 37 (, 1 to 4); 38 (, 1 to 4); 39 (, 1 to 4); 40 (, 1 to 3); 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 : 1986: 1(1)
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 41
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Portico
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Preserved
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2026-02-12
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Preserved : 1987/1988: 2(1-2), 1988: 3(1-2), 1989: 4(1-2), 1990: 5(1-2), 1991: 6(1-2), 1992: 7(1-2), 1993: 8(1-2), 1994: 9(1-2), 1995: 10(1-2), 1996: 11(1-2), 1997: 12(1-2), 1998: 13(1-2), 1999: 14(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 2000: 15(1-2), 2001: 16(1-2), 2002: 17(1-2), 2003: 18(1-2), 2004: 19(1-2), 2005: 20(1-2), 2006: 21(1-2), 2007: 22(1-2), 2008: 23(1-2), 2009: 24(1-2), 2010: 25(1-4), 2011: 26(1-4), 2012: 27(1-4), 2013: 28(1-4), 2014: 29(1-4), 2015: 30(1-4), 2016: 31(1-4), 2017: 32(1-4), 2018: 33(1-4), 2017/2019: 34(1-4), 2020: 35(1-4), 2021: 36(1-4), 2022: 37(1-4), 2023: 38(1-4), 2024: 39(1-4), 2025: 40(1-4), 2026: 41(1)
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LOCKSS Archive
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In Progress
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2026-02-09
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27, 34
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LOCKSS Archive
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Preserved
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2026-02-09
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28 to 33
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Library of Congress
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Preserved
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2025-04-07
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33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (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 (2); 12 (1, 2); 13 (1, 2); 14 (1); 15 (2); 16 (1, 2); 17 (1, 2); 18 (1, 2); 19 (1, 2); 21 (1, 2); 22 (1, 2); 23 (1, 2); 24; 25 (1, 2)
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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 (2); 12 (1, 2); 13 (1, 2); 14 (1); 15 (2); 16 (1, 2); 17 (1, 2); 18 (1, 2); 19 (1, 2); 21 (1, 2); 22 (1, 2); 23 (1, 2); 24; 25 (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 : 3 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 3); 28 (1, 3, 4); 29 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4)
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National Digital Preservation Program, China
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Preserved
|
2025-12-04
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Preserved : 3 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 3); 28 (1, 3, 4); 29 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4)
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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 : 13 (1); 15; 16; 18 (2); 19 (1, 2); 20 (1, 2); 21 (1, 2); 22 (1, 2); 23 (1, 2); 24 (1, 2); 25 (1-4); 26 (1-4); 27 (1, 2, 3-4); 28 (1-2, 3, 4); 29 (1-3); 30 (1-4); 31 (1-4); 32 (1-4); 33 (1-4); 34 (1-3)
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