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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1-4); 17 (2 to 4); 18 (1, 2, 3-4); 19 (1, 2, 3-4, 5-6); 20 (1, 2, 3-4); 21 (1, 3, 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1-2, 3 to 6); 30 (1-2, 3 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1, 2)
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Portico
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Preserved
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2026-04-02
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Preserved : 2001/2002: 13(1-4), 2003: 14(1-4), 2004: 15(1-4), 2005: 16(1-4), 2005: 17(1-4), 2006: 18(1-4), 2007: 19(1-6), 2008: 20(1-4), 2009: 21(1-4), 2010: 22(1-4), 2011: 23(1-4), 2012: 24(1-6), 2013/2014: 25(1-2, 4-6), 2014: 26(1-5), 2015: 27(2-6), 2016: 28(1-6), 2017: 29(1-6), 2018: 30(1-6), 2019: 31(1-6), 2019/2020: 32(1-6), 2021: 33(1-6), 2022: 34(1-6), 2023: 35(1-6), 2023/2024: 36(1-6), 2025: 37(1-6), 2026: 38(1-2)
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CLOCKSS Archive
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Preserved
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2026-03-30
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13 to 38
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LOCKSS Archive
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In Progress
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2026-03-30
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24
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LOCKSS Archive
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Preserved
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2026-03-30
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25 to 31
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Library of Congress
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Preserved
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2025-04-07
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28 (4, 5); 29 (6); 30 (1-2, 3 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 5); 37 (1)
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 34 (3 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1, 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 : 2 (1 to 3); 3 (1-2, 3 to 6); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1); 17 (2 to 4); 18 (1 to 3); 19 (1 to 3, 5); 21 (Suppl 1, 1, 3, 4); 22 (1 to 4); 23 (Suppl 1, 1 to 4); 24 (1 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1, 3 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (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 : 2 (1 to 3); 3 (1-2, 3 to 6); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1); 17 (2 to 4); 18 (1 to 3); 19 (1 to 3, 5); 21 (Suppl 1, 1, 3, 4); 22 (1 to 4); 23 (Suppl 1, 1 to 4); 24 (1 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1, 3 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (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 : 13 (1, 2, 4); 17; 20 (1, 2, 3-4); 21 (supplement-1, 1-2, 3, 4); 22 (1-4); 23 (supplement-1, 1-4); 24 (1-6); 25 (1-6); 26 (1, 2, 4-6); 27 (1, 3-6); 28 (1-6); 29 (1-2, 3-6); 30 (1-2, 3-6); 31 (1, 3, 4)
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