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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 20 (2 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 3); 30 (1, 2); 31 (1 to 3); 32 (4); 33 (1)
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CLOCKSS Archive
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Preserved
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2026-05-25
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20 to 33
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Portico
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Preserved
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2026-05-21
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Preserved : 2004: 20(1-4), 2005: 21(1-4), 2006: 22(1-4), 2007: 23(1-4), 2008: 24(1-4), 2009: 25(1-4), 2010: 26(1-4), 2011: 27(1-4), 2012: 28(1-4), 2013: 29(1-4), 2014: 30(1-4), 2015: 31(1-4), 2016: 32(1-4), 2017: 33(1-2)
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LOCKSS Archive
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In Progress
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2026-05-25
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28
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LOCKSS Archive
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Preserved
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2026-05-25
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29 to 33
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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 : 20 (1-4); 21 (1); 22 (2); 23 (1, 2, 4); 24 (2-4); 25 (1, 2, 4); 26 (1, 2, 4); 27 (1-4); 28 (1, 2); 29 (1-4); 30 (1-4); 31 (1-4); 32 (1); 33 (2, 3)
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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); 21 (Suppl 1, 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 3)
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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); 21 (Suppl 1, 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 3)
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