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Library of Congress
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Preserved
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2025-04-07
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8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 4); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1)
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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 : 13 (2 to 6); 14 (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 : 13 (2 to 6); 14 (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 : 1 (1, 2-3, 4); 2 (1-4); 3 (1-4); 4 (1-2, 3, 4); 5 (1-4); 6 (1-4); 7 (1-4); 8 (1-4); 9 (1-3)
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (1, 2-3, 4); 2 (1 to 4); 3 (1 to 4); 4 (1-2, 3, 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 4); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (1, 2)
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LOCKSS Archive
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In Progress
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2026-04-06
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1 to 10
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 16
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Portico
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Preserved
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2026-04-02
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Preserved : 2011: 1(1-4), 2012: 2(1-3), 2013: 3(1-2, 4), 2014: 4(1-3), 2015: 5(2-4), 2016: 6(1-4), 2017: 7(1-4), 2017/2018: 8(1-4), 2019: 9(1-4), 2020: 10(1-4), 2021: 11(1-4), 2022: 12(1-6), 2023: 13(1-6), 2024: 14(1-6), 2025: 15(1-6), 2026: 16(1-2)
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