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CLOCKSS Archive
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Preserved
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2026-02-09
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40 to 48
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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 52
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CLOCKSS Archive
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Preserved
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2026-02-09
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50 to 58
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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 22(5)
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Portico
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Preserved
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2026-02-12
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Preserved : 2014: 46(12), 2015: 47(1, 3-12), 2016: 48(1-3, 5-12), 2017: 49(2-12)
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Portico
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Preserved
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2026-02-12
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Preserved : 2019: 51(10), 2020: 52(1-12), 2021: 53(1-12), 2022: 54(1-12), 2023: 55(1-12), 2024: 56(1-12), 2025: 57(2-12), 2026: 58(1)
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Library of Congress
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Preserved
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2025-04-07
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50 (2 to 12); 51 (1 to 9, 12); 52 (1 to 12); 53 (1 to 12); 54 (1, 2); 55 (3 to 12); 56 (1 to 10); 57 (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 : 5 (2 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11, 12); 54 (1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1, 2)
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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 : 5 (2 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11, 12); 54 (1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1, 2)
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