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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 17 (1, 2); 18 (1-2); 19 (32, 33); 20 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 30 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1)
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CLOCKSS Archive
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Preserved
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2026-04-06
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17 to 41
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Portico
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Preserved
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2026-04-02
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Preserved : 2002: 17(1-2), 2003: 18(1-2), 2004: 19(32-33), 2005: 20(1-4), 2006: 21(1-4), 2007: 22(1-4), 2008: 23(1-4), 2009: 24(1-4), 2010: 25(1-4), 2011: 26(1-4), 2012: 27(1-4), 2013: 28(1-4), 2014: 29(1-4), 2015: 30(1-4), 2016: 31(1-4), 2017: 32(1-4), 2018: 33(1-4), 2019: 34(1-4), 2019/2020: 35(1-4), 2021: 36(1-4), 2022: 37(1-4), 2023: 38(1-4), 2024: 39(1-3), 2025: 40(1-4), 2026: 41(1)
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LOCKSS Archive
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In Progress
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2026-04-06
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27, 34
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LOCKSS Archive
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Preserved
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2026-04-06
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28 to 33
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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 : 2 (1 to 4); 3 (1 to 4); 17 (1, 2); 18 (1); 19 (32, 33); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4)
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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 : 2 (1 to 4); 3 (1 to 4); 17 (1, 2); 18 (1); 19 (32, 33); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4)
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Library of Congress
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Preserved
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2025-04-07
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33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 3)
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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 : 17 (1, 2); 18 (1-2); 19 (32, 33); 20 (1-4); 21 (1-3); 22 (2-4); 23 (1-4); 24 (1-4); 25 (1-4); 26 (1-4); 27 (1-4); 28 (1-4); 29 (1-4); 30 (1-4); 31 (1-4); 32 (1-4); 33 (1-4); 34 (1-4)
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