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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 53 (2); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 5); 58 (1 to 5); 59 (1 to 5); 60 (1 to 5); 61 (1 to 5); 62 (1)
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LOCKSS Archive
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In Progress
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2026-04-27
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53 to 56
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CLOCKSS Archive
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Preserved
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2026-04-27
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53 to 62
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Portico
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Preserved
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2026-04-30
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Preserved : 2017: 53(1-2), 2018: 54(1-4), 2019: 55(1-4), 2019/2020: 56(1-4), 2021: 57(1-5), 2022: 58(1-5), 2023: 59(1-5), 2024: 60(1-5), 2025: 61(1-5), 2026: 62(1-2)
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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 : 53 (1, 2); 54 (1-4); 55 (1-3)
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Library of Congress
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Preserved
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2025-04-07
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54 (2 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 5); 58 (1 to 5); 59 (1 to 5); 60 (1 to 4)
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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 : 6 (1 to 5); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4)
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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 : 6 (1 to 5); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4)
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