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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 51 (1 to 12); 52 (, 1 to 12); 53 (, 1 to 14); 54 (, 1 to 14); 55 (, 1 to 14); 56 (, 1 to 14); 57 (, 1 to 14); 58 (, 1 to 14); 59 (, 1 to 14); 60 (, 1 to 14); 61 (, 1 to 14); 62 (, 1 to 14); 63 (, 1 to 14); 64 (, 1 to 14); 65 (, 1 to 14); 66 (, 1 to 14); 67 (, 1 to 14); 68 (, 1 to 14); 69 (, 1 to 14); 70 (, 1 to 5); 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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CLOCKSS Archive
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Preserved
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2026-02-09
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51 to 70
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Portico
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Preserved
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2026-02-12
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Preserved : 2006: 51(1-12), 2007: 52(1-12), 2008: 53(1-14), 2009: 54(1-14), 2010: 55(1-14), 2011: 56(1-14), 2012: 57(1-10, 12-14), 2013: 58(1-7, 9, 11-14), 2014: 59(1-12), 2015: 60(2-14), 2016: 61(1-14), 2017: 62(1-14), 2018: 63(1-14), 2019/2020: 64(1-14), 2020: 65(1-14), 2021: 66(1-14), 2022: 67(1-2, S 2, 3-13), 2023: 68(1-4, 8-14), 2024: 69(1-2, 6-8, 11), 2025: 70(1-10)
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LOCKSS Archive
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In Progress
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2026-02-09
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57, 64
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LOCKSS Archive
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Preserved
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2026-02-09
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58 to 63
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Library of Congress
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Preserved
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2025-04-07
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62 (14); 63 (1 to 14); 64 (1 to 14); 65 (1 to 14); 66 (1 to 14); 67 (1, S1, S2, 2 to 14); 68 (1 to 14)
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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 : 6 (1 to 9, 11 to 14); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11 to 14); 54 (1 to 9, 11 to 14); 55 (1 to 9, 11 to 14); 56 (1 to 9, 11 to 14); 57 (1 to 9, 11 to 14); 58 (1 to 9, 11 to 14); 59 (1 to 9, 11 to 14); 61 (1 to 9, 11 to 14); 62 (1 to 9, 11 to 14); 63 (1 to 9, 11 to 14); 64 (1 to 9, 11 to 14); 65 (1 to 9, 11 to 14); 66 (1 to 9, 11 to 14); 67 (Suppl 2, 1 to 9, 11 to 14); 68 (1 to 9, 11, 12); 69 (1 to 9)
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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 : 6 (1 to 9, 11 to 14); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11 to 14); 54 (1 to 9, 11 to 14); 55 (1 to 9, 11 to 14); 56 (1 to 9, 11 to 14); 57 (1 to 9, 11 to 14); 58 (1 to 9, 11 to 14); 59 (1 to 9, 11 to 14); 61 (1 to 9, 11 to 14); 62 (1 to 9, 11 to 14); 63 (1 to 9, 11 to 14); 64 (1 to 9, 11 to 14); 65 (1 to 9, 11 to 14); 66 (1 to 9, 11 to 14); 67 (Suppl 2, 1 to 9, 11 to 14); 68 (1 to 9, 11, 12); 69 (1 to 9)
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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 : 53 (13); 54 (8); 55 (1, 3 to 9, 11 to 14); 56 (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 : 53 (13); 54 (8); 55 (1, 3 to 9, 11 to 14); 56 (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 : 51 (1, 3-12); 52 (1, 3, 5-12); 53 (1-14); 54 (1-14); 55 (1-14); 56 (1-14); 57 (1-14); 58 (1-14); 59 (1-14); 60 (1-14); 61 (1-14); 62 (1-14); 63 (1-14); 64 (1-10); 223 (5); 483 (6)
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