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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 28 (1, 2, 3-4); 29 (, 1, 2, 3-4); 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 (, 1/2, 3, 4); 37 (, 1 to 4); 38 (, 1 to 5); 39 (, 1 to 6); 40 (, 1 to 4); 41 (, 1 to 4); 42 (, 1 to 4); 43 (, 1 to 4); 44 (, 1 to 4); 45 (, 1 to 4); 46 (, 1 to 4); 47 (, 1 to 4); 48 (, 1 to 4); 49 (, 1 to 6); 50 (, 1 to 6); 51 (, 1 to 6); 52 (, 1 to 6); 53 (, 1 to 6); 54 (, 1 to 12); 55 (, 1 to 12); 56 (, 1, 5, 8 to 12); 57 (, 1 to 12); 58 (, 1 to 12); 59 (, 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
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Internet Archive
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Preserved
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2025-08-08
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14 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 63
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Portico
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Preserved
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2026-02-12
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Preserved : 1991: 28(1-2)
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Portico
|
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Preserved
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2026-02-12
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Preserved : 1992: 28(3-4), 1992: 29(1-4), 1993: 30(1-4), 1994: 31(1-4), 1995: 32(1-4), 1996: 33(1-4), 1997: 34(1-4), 1998: 35(1-4), 1999: 36(1-4), 2000: 37(1-4), 2001: 38(1-4), 2002: 39(1-4), 2003: 40(1-4), 2004: 41(1-4), 2005: 42(1-4), 2006: 43(1-4), 2007: 44(1-4), 2008: 45(1-4), 2009: 46(1-4), 2010: 47(1-4), 2011: 48(1-4), 2012: 49(1-6), 2013: 50(1-6), 2014: 51(1-6), 2015: 52(2-6), 2016: 53(1-6), 2017: 54(1-12), 2018: 55(1-12), 2018/2019: 56(1-12), 2019/2020: 57(1-12), 2021: 58(1-12), 2022: 59(1-4)
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LOCKSS Archive
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Preserved
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2026-02-09
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45 to 55
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LOCKSS Archive
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In Progress
|
2026-02-09
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|
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56
|
|
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Scholars Portal
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|
Preserved
|
2025-09-02
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|
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Preserved : 59 (5 to 12); 60 (, 1 to 12); 61 (, 1, 2, 4 to 12); 62 (, 1 to 6); 2022; 2023; 2024; 2025
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National Digital Preservation Program, China
|
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Preserved
|
2025-10-23
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|
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Preserved : 4 (1 to 4); 5 (1 to 6); 6 (1 to 9, 11, 12); 34 (1 to 4); 35 (1 to 4); 36 (1, 3, 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1 to 9, 11, 12); 58 (1 to 9, 11, 12); 59 (1 to 9, 11, 12); 61 (1 to 9, 11, 12)
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National Digital Preservation Program, China
|
|
Preserved
|
2025-12-04
|
|
|
Preserved : 4 (1 to 4); 5 (1 to 6); 6 (1 to 9, 11, 12); 34 (1 to 4); 35 (1 to 4); 36 (1, 3, 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1 to 9, 11, 12); 58 (1 to 9, 11, 12); 59 (1 to 9, 11, 12); 61 (1 to 9, 11, 12)
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National Library of the Netherlands
|
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Preserved
|
2024-12-15
|
|
|
Preserved : 34 (1-4); 35 (1-4); 36 (1-2, 3, 4); 37 (1-4); 38 (1-4); 39 (1-4); 40 (1-4); 41 (1-4); 42 (1-4); 43 (1-4); 44 (2-4); 45 (1-4); 46 (1-4); 47 (supplement-1, 1-4); 48 (1, 3, 4); 49 (supplement-1, 1, 2, 4-6); 50 (1-3, 6); 51 (1-6); 52 (1-6); 53 (1-6); 54 (1-12); 55 (1-12); 56 (1-12)
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