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Library of Congress
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Preserved
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2025-04-07
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15 (1 to 7); 16 (1 to 6); 17 (1 to 7); 18 (1 to 7); 19 (1 to 6); 20 (1 to 6); 21 (1 to 5)
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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 : 1 (1 to 7); 2 (1 to 6); 8 (1 to 9); 9 (1 to 3, 4-5, 6-7, 8, 9-1); 12 (1 to 7); 17 (1 to 7); 18 (1 to 7); 21 (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 : 1 (1 to 7); 2 (1 to 6); 8 (1 to 9); 9 (1 to 3, 4-5, 6-7, 8, 9-1); 12 (1 to 7); 17 (1 to 7); 18 (1 to 7); 21 (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 : 3 (1-4, 6); 4 (1-3, 5, 6); 5 (1-7); 6 (1-7); 7 (1-7); 8 (1-10); 9 (1-3, 4-5, 6-7, 8, 9-10); 10 (1-7); 11 (1-7); 12 (1-7); 13 (1-7); 14 (1-7); 15 (1-7); 16 (1-5)
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CLOCKSS Archive
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Preserved
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2026-04-06
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3 to 23
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Portico
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Preserved
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2026-04-02
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Preserved : 2006: 3(1-6), 2007: 4(1-6), 2008: 5(1-7), 2009: 6(1-7), 2010: 7(1-7), 2011: 8(1-10), 2012: 9(1-10), 2013: 10(1-7), 2014: 11(1-7), 2015: 12(2-7), 2016: 13(1-7), 2017: 14(1-7), 2018: 15(1-7), 2019: 16(1-6), 2020: 17(1-7), 2021: 18(1-7), 2022: 19(1-5), 2023: 20(1-6), 2024: 21(1-5), 2025: 22(1-6), 2026: 23(1)
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LOCKSS Archive
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In Progress
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2026-04-06
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9, 16
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LOCKSS Archive
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Preserved
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2026-04-06
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10 to 15
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