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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 6 (11); 23 (, 1); 24 (, 1 to 12); 25 (, 1 to 12); 26 (, 1 to 12); 27 (, 1 to 12); 28 (, 1 to 13); 29 (, 1 to 13); 30 (, 1 to 13); 31 (, 1 to 13); 32 (, 1 to 13); 33 (, 1 to 13); 34 (, 1 to 13); 35 (, 1 to 13); 36 (, 1 to 13); 37 (, 1 to 12); 38 (, 1 to 13); 39 (, 1 to 13); 40 (, 1 to 13); 41 (, 1 to 13); 42 (, 1 to 13); 43 (, 1 to 13); 44 (, 1 to 13); 45 (, 1 to 13); 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, 3, 5 to 12); 56 (, 1 to 8); 1975; 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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6A to 39A
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CLOCKSS Archive
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Preserved
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2026-02-09
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2, 5 to 57
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LOCKSS Archive
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In Progress
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2026-02-09
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43
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LOCKSS Archive
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Preserved
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2026-02-09
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44 to 50
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Library of Congress
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Preserved
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2025-04-07
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48 (10); 49 (3 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 11); 56 (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 9, 11 to 13); 4 (1 to 9, 11 to 13); 5 (1 to 9, 11, 12); 28 (1 to 9, 11 to 13); 29 (1 to 9, 11 to 13); 31 (1 to 9, 11 to 13); 32 (1 to 9, 11 to 13); 33 (1 to 9, 11 to 13); 34 (1 to 9, 11 to 13); 35 (1 to 9, 11 to 13); 36 (1 to 9, 11 to 13); 37 (1 to 9, 11, 12); 38 (1 to 9, 11 to 13); 39 (1 to 9, 11 to 13); 41 (1 to 9, 11 to 13); 42 (1 to 9, 11 to 13); 43 (Suppl 1, 1 to 9, 11 to 13); 44 (Suppl 1, 1 to 9, 11 to 13); 45 (1 to 9, 11 to 13); 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)
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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 : 3 (1 to 9, 11 to 13); 4 (1 to 9, 11 to 13); 5 (1 to 9, 11, 12); 28 (1 to 9, 11 to 13); 29 (1 to 9, 11 to 13); 31 (1 to 9, 11 to 13); 32 (1 to 9, 11 to 13); 33 (1 to 9, 11 to 13); 34 (1 to 9, 11 to 13); 35 (1 to 9, 11 to 13); 36 (1 to 9, 11 to 13); 37 (1 to 9, 11, 12); 38 (1 to 9, 11 to 13); 39 (1 to 9, 11 to 13); 41 (1 to 9, 11 to 13); 42 (1 to 9, 11 to 13); 43 (Suppl 1, 1 to 9, 11 to 13); 44 (Suppl 1, 1 to 9, 11 to 13); 45 (1 to 9, 11 to 13); 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)
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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 : 28 (5, 13); 29; 30 (2, 5, 6, 9, 10, 12, 13); 31 (3, 13); 32 (4, 11, 13); 33 (4, 13); 34 (2, 13); 35 (2-4, 6, 9, 13); 36 (7, 13); 37 (2-4, 12); 38 (1, 2, 4-13); 39 (1-13); 40 (1-13); 41 (1-13); 42 (1-13); 43 (1-13); 44 (supplement-1, 1-10, 12, 13); 45 (1-13); 46 (1-12); 47 (1-12); 48 (1-12); 49 (1-12); 50 (1-12)
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