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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 17 (1 to 4); 18 (1 to 6); 19 (1 to 6); 20 (1 to 8); 21 (1 to 8); 22 (1 to 8); 23 (1 to 8); 24 (1 to 8); 25 (1 to 8); 26 (1 to 8); 27 (1 to 8); 28 (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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17 to 22
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CLOCKSS Archive
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Preserved
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2026-04-06
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17 to 28
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Portico
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Preserved
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2026-04-09
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Preserved : 2015: 17(1-4), 2016: 18(1-6), 2017: 19(1-6), 2018: 20(1-8), 2019: 21(1-8), 2019/2020: 22(1-8), 2021: 23(1-8), 2022: 24(1-8), 2023: 25(1-8), 2024: 26(1-8), 2025: 27(1, 3-8), 2026: 28(1-2)
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Library of Congress
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Preserved
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2025-04-07
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18 (4); 19 (6); 20 (1 to 8); 21 (1 to 8); 22 (1 to 8); 23 (1 to 8); 24 (1 to 8); 25 (1 to 8); 26 (1 to 8)
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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 : 26 (1 to 8)
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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 : 26 (1 to 8)
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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 : 17 (1-4); 18 (1-6); 19 (1-6); 20 (1-8); 21 (1-8)
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