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Portico
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Preserved
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2026-02-12
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Preserved : 2003: 1(1-3), 2004: 2(1-3), 2005: 3(1-3), 2006: 4(1-3), 2007: 5(1-4), 2008: 6(1-4), 2009: 7(1-4), 2010: 8(1-4), 2011: 9(1-4), 2012: 10(1-4), 2013: 11(1-2, 4), 2014: 12(1-4), 2015: 13(1-4), 2016: 14(1-4), 2017: 15(1-4), 2018: 16(1-4), 2019: 17(1-4), 2020: 18(1-4), 2021: 19(1-4), 2022: 20(1-4), 2023: 21(1-4), 2024: 22(1-4), 2025: 23(1-4)
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CLOCKSS Archive
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Preserved
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2026-02-09
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10 to 13
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LOCKSS Archive
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In Progress
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2026-02-09
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1 to 18
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 23
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Library of Congress
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Preserved
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2025-04-07
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14 (3, 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1-2, 3, 4); 19 (1, 2-3, 4); 20 (1); 21 (2 to 4); 22 (1 to 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 : 22 (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 : 22 (1 to 4)
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