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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (1, 2); 2 (1, 2); 3 (1, 2); 4 (1, 2); 6 (1, 2); 7 (1 to 3); 8 (1 to 3); 9 (1-2, 3); 10 (1 to 3); 11 (1 to 3); 12 (2, 3); 13 (1 to 3); 14 (1, 2-3); 15 (1, 2-3); 16 (1 to 3); 17 (1, 2-3); 18 (1-2, 3); 19 (1-2, 3); 20 (1 to 3); 21 (1-2, 3); 22 (1)
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Portico
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Preserved
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2026-04-23
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Preserved : 2005/2006: 2(1-2), 2007: 3(1-2), 2008: 4(1)
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Portico
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Preserved
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2026-04-23
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Preserved : 2011: 7(1-3), 2012: 8(1-3), 2013: 9(1-3), 2014: 10(1-3), 2015: 11(1-3), 2016: 12(1-3), 2017: 13(1-3), 2018: 14(1-3), 2019: 15(1-3), 2020/2021: 16(1-3), 2021: 17(1-3), 2022: 18(1-3), 2023: 19(1-3), 2024: 20(2-3), 2025: 21(1-3), 2026: 22(1)
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LOCKSS Archive
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Preserved
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2026-04-13
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1 to 16
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CLOCKSS Archive
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Preserved
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2026-04-13
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1 to 21
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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 : 1 (2, 3); 2 (1, 2); 3 (1, 2); 4 (1, 2); 5 (1, 2); 6 (1, 2); 7 (1 to 3); 8 (1 to 3); 9 (1-2, 3); 11 (1 to 3); 12 (1 to 3); 13 (1 to 3); 14 (1, 2-3); 15 (1, 2-3); 16 (1 to 3); 17 (1, 2-3); 18 (1-2, 3); 19 (1-2, 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, 2); 3 (1, 2); 4 (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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13 (1 to 3); 14 (1, 2-3); 15 (1, 2-3); 16 (1 to 3); 17 (1, 2-3); 18 (1-2, 3); 19 (1-2, 3); 20 (1)
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