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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1 to 3); 2 (, 1 to 3); 3 (, 1 to 3); 4 (, 1 to 3); 5 (, 1 to 3); 6 (, 1 to 3); 7 (, 1 to 3); 8 (, 1 to 3); 9 (, 1 to 3); 10 (, 1 to 3); 11 (, 1 to 3); 12 (, 1 to 3); 13 (, 1 to 3); 14 (, 1 to 4); 15 (, 1 to 4); 16 (, 1 to 4); 17 (, 1 to 4); 18 (, 1 to 4); 19 (, 1 to 6); 20 (, 1 to 6); 21 (, 1 to 6); 22 (, 1 to 6); 23 (, 1 to 6); 24 (, 1 to 6); 25 (, 1 to 6); 26 (, 1 to 6); 27 (, 2 to 6); 28 (, 1 to 4); 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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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 17
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 27
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CLOCKSS Archive
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Preserved
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2026-02-09
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11 to 20
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LOCKSS Archive
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In Progress
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2026-02-09
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28
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Portico
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Preserved
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2026-02-12
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Preserved : 2015: 18(1-4), 2016: 19(1-6), 2017: 20(1-6), 2018: 21(1-6), 2019: 22(1-6), 2020: 23(1-6), 2021: 24(1-6), 2022: 25(1-6), 2023: 26(1-6), 2024: 27(1-6), 2025: 28(1-6)
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CLOCKSS Archive
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Preserved
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2026-02-09
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ahead-of-print to 28
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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 : 1 (sup1, 1 to 3); 2 (sup1, 1 to 6); 3 (1 to 3); 4 (1 to 3); 5 (1 to 3); 6 (1 to 3); 7 (1 to 3); 8 (1 to 3); 9 (1 to 3); 11 (1 to 3); 12 (1 to 3); 13 (1 to 3); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 6); 21 (1 to 6); 22 (sup1, 1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 6); 26 (1 to 5); 27 (1 to 6); 28 (2)
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Library of Congress
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Preserved
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2025-04-07
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13 (1 to 3); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 6); 20 (sup1, 1 to 6); 21 (1 to 6); 22 (sup1, S1, 1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 5)
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British Library
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Preserved
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2019-09-18
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Preserved : 0 (1), 1 (1 to 3), 2 (1 to 3), 3 (1 to 3), 4 (1 to 3), 5 (1 to 3), 6 (1 to 3), 7 (1 to 3), 8 (1 to 3), 9 (1 to 3), 10 (1 to 3), 11 (1 to 3), 12 (1 to 3), 13 (1 to 3), 14 (1 to 4), 15 (1 to 4), 16 (1 to 4), 17 (1 to 4), 18 (1 to 2)
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