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Library of Congress
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Preserved
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2025-04-07
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6 (1 to 3); 7 (1, 2-3); 8 (1 to 3); 9 (1 to 3); 10 (1 to 3); 11 (1 to 3); 12 (1 to 3); 13 (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 : 12 (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 : 12 (1 to 3)
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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); 2 (1); 3 (2); 4 (1-3); 5 (1-3); 6 (1-3); 7 (1)
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (2); 2 (1); 3 (2); 4 (1 to 3); 5 (1 to 3); 6 (1 to 3); 7 (1, 2-3); 8 (1 to 3); 9 (1 to 3); 10 (1 to 3); 11 (1 to 3); 12 (1 to 3); 13 (1); 14
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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 8
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 14
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Portico
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Preserved
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2026-04-09
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Preserved : 2018: 6(1-3), 2019: 7(1-3), 2019/2020: 8(1-3), 2021: 9(1-3), 2022: 10(1-3), 2023: 11(1-3), 2024: 12(1-3), 2025: 13(1), 2026: 14(1)
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