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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 47 (6); 48 (, 1 to 6); 49 (, 1 to 6); 50 (, 1 to 6); 51 (, 1 to 6); 52 (, 1 to 6); 53 (, 1 to 6); 54 (, 1 to 6); 55 (, 1 to 6); 56 (, 1 to 6); 57 (, 1 to 6); 58 (, 1 to 6); 59 (, 1 to 6); 60 (, 1 to 6); 61 (, 1 to 6); 62 (, 1 to 6); 63 (, 1 to 6); 64 (, 1 to 6); 65 (, 1 to 6); 66 (, 1 to 6); 67 (, 1 to 6); 68 (, 1 to 6); 69 (, 1 to 7); 70 (, 1 to 9); 71 (, 1 to 6); 72 (, 1 to 4); 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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5 to 40
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CLOCKSS Archive
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Preserved
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2026-02-09
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47 to 73
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Portico
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Preserved
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2026-02-12
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Preserved : 2000: 47(6), 2001: 48(1-6), 2002: 49(1-6), 2003: 50(1-6), 2004: 51(1-6), 2005: 52(1-6), 2006: 53(1-6), 2007: 54(1-6), 2008: 55(1-6), 2009: 56(1-6), 2010: 57(1-6), 2011: 58(1-6), 2012: 59(1-6), 2013: 60(1-5), 2014: 61(1-5), 2015: 62(1-6), 2016: 63(1-6), 2017: 64(1-6), 2018: 65(1-6), 2019: 66(1-6), 2020: 67(1-6), 2021: 68(1, S 1, 2-6), 2022: 69(1-7), 2023: 70(1-9), 2024: 71(1-6), 2025: 72(1-7), 2026: 73(1)
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LOCKSS Archive
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In Progress
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2026-02-09
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59
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LOCKSS Archive
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Preserved
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2026-02-09
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60 to 66
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Library of Congress
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Preserved
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2025-04-07
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65 (1 to 6); 66 (1 to 6); 67 (1 to 6); 68 (S1, 1 to 4, 6); 69 (1 to 7); 70 (1 to 9); 71 (1 to 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 : 5 (1 to 6); 47; 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 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 : 5 (1 to 6); 47; 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6)
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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 : 5 (1 to 6); 6 (1 to 6); 7 (1 to 7); 47 (6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6); 61 (1 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 6); 68 (Suppl 1, 1 to 6); 69 (1 to 7); 71 (1 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 : 5 (1 to 6); 6 (1 to 6); 7 (1 to 7); 47 (6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6); 61 (1 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 6); 68 (Suppl 1, 1 to 6); 69 (1 to 7); 71 (1 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 : 47 (6); 48 (1-6); 49 (1-6); 50 (1-6); 51 (1-6); 52 (1-6); 53 (1-6); 54 (1-6); 55 (1-6); 56 (1-6); 57 (1-6); 58 (1-6); 59 (1-6); 60 (1-6); 61 (1-6); 62 (1-6); 63 (1-6); 64 (1-6); 65 (1-6); 66 (1-5)
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