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Portico
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Preserved
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2026-02-12
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Preserved : 1991: 31(1-12), 1992: 32(1-12), 1993: 33(1-12), 1994: 34(1-12)
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 31 (1 to 12); 32 (, 1 to 12); 33 (, 1 to 12); 34 (, 1 to 7, 8-9, 10 to 12); 35 (, 1 to 12); 36 (, 1 to 12); 46 (, 1 to 12); 47 (, 1 to 12); 48 (, 1 to 12); 49 (, 1 to 12); 50 (, 1 to 12); 51 (, 1 to 12); 52 (, 1 to 12); 53 (, 1 to 12); 54 (, 1 to 12); 55 (, 1 to 12); 56 (, 1 to 12); 57 (, 1 to 12); 58 (, 1 to 12); 59 (, 1 to 12); 60 (, 1 to 12); 61 (, 1 to 12); 62 (, 1 to 12); 63 (, 1 to 12); 64 (, 2 to 12); 65 (, 1 to 5); 1991; 1992; 1993; 1994; 1995; 1996; 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 36
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CLOCKSS Archive
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Preserved
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2026-02-09
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46 to 65
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Portico
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Preserved
|
2026-02-12
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Preserved : 2006: 46(1-12), 2007: 47(1-12), 2008: 48(1-12), 2009: 49(1-12), 2010: 50(1-12), 2011: 51(1-12), 2012: 52(1-10, 12), 2013: 53(1-9, 11-12), 2014: 54(1-11), 2015: 55(2-12), 2016: 56(1-12), 2017: 57(1-12), 2018: 58(1-12), 2019/2020: 59(1-12), 2020: 60(1-12), 2021: 61(1-12), 2022: 62(1-11), 2023: 63(1-12), 2024: 64(1-9, 12), 2025: 65(2-12)
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LOCKSS Archive
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In Progress
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2026-02-09
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52, 59
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|
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LOCKSS Archive
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Preserved
|
2026-02-09
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53 to 58
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|
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Library of Congress
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Preserved
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2025-04-07
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|
|
57 (12); 58 (1 to 12); 59 (1 to 12); 60 (1 to 12); 61 (1 to 12); 62 (1 to 12); 63 (1 to 12); 64 (1 to 8)
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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 : 5 (1 to 5, 9, 11, 12); 6 (1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11, 12); 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); 62 (1 to 9, 11, 12); 63 (1 to 9, 11); 64 (1 to 9, 11, 12)
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|
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National Digital Preservation Program, China
|
|
Preserved
|
2025-12-04
|
|
|
Preserved : 5 (1 to 5, 9, 11, 12); 6 (1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11, 12); 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); 62 (1 to 9, 11, 12); 63 (1 to 9, 11); 64 (1 to 9, 11, 12)
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|
|
National Digital Preservation Program, China
|
|
Preserved
|
2025-10-23
|
|
|
Preserved : 5 (1, 3 to 9, 11, 12); 47 (7); 48 (1 to 3); 51 (1 to 6)
|
|
|
National Digital Preservation Program, China
|
|
Preserved
|
2025-12-04
|
|
|
Preserved : 5 (1, 3 to 9, 11, 12); 47 (7); 48 (1 to 3); 51 (1 to 6)
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|
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National Library of the Netherlands
|
|
Preserved
|
2024-12-15
|
|
|
Preserved : 46 (3-7, 9-12); 47 (2, 5-12); 48 (1-12); 49 (1-12); 50 (1-12); 51 (1-12); 52 (1-12); 53 (1-12); 54 (1-12); 55 (1-12); 56 (1-12); 57 (1-12); 58 (1-12); 59 (1-10)
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