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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 21 (2 to 12); 22 (1 to 12); 23 (1 to 12); 24 (1 to 12); 25 (1 to 12); 26 (1 to 12); 27 (1 to 12); 28 (1 to 12); 29 (1 to 12); 30 (1 to 12); 31 (1 to 12); 32 (1, 2, 4 to 12); 33 (1 to 3, 5 to 12); 34 (1 to 12); 35 (1 to 4)
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LOCKSS Archive
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In Progress
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2026-04-13
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21 to 29
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CLOCKSS Archive
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Preserved
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2026-04-13
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21 to 35
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Portico
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Preserved
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2026-04-16
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Preserved : 2012: 21(1-12), 2013: 22(1-12), 2014: 23(1-12), 2015: 24(3-12), 2016: 25(1-12), 2017: 26(1-12), 2018: 27(1-12), 2019: 28(1-12), 2019/2020: 29(1-12), 2021: 30(1-12), 2022: 31(1-12), 2023: 32(2-12), 2024: 33(1-7, 9-12), 2025: 34(1-3, 5-12), 2026: 35(1-4)
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Library of Congress
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Preserved
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2025-04-07
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27 (3 to 12); 28 (1 to 12); 29 (1 to 12); 30 (1 to 9, 11, 12); 31 (1 to 12); 32 (1 to 12); 33 (1 to 12); 34 (2)
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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 : 21 (1 to 9, 11, 12); 22 (1 to 9, 11, 12); 24 (1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12)
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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 : 21 (1 to 9, 11, 12); 22 (1 to 9, 11, 12); 24 (1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12)
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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 : 21 (1-12); 22 (1-12); 23 (1-12); 24 (1-12); 25 (1-12); 26 (1-12); 27 (1-12); 28 (1-11)
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