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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 14 (2 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 7); 19 (1 to 7); 20 (1 to 7); 21 (1 to 7); 22 (1 to 7); 23 (1 to 7); 24 (1 to 7); 25 (1 to 7); 26 (1 to 7); 27 (1 to 7); 28 (1 to 8); 29 (Suppl, 1 to 7); 30 (Suppl, 1 to 7); 31 (1 to 7); 32 (3 to 7); 33 (1 to 7); 34 (1, 2)
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CLOCKSS Archive
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Preserved
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2026-04-27
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14 to 34
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Portico
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Preserved
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2026-04-23
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Preserved : 2006: 14(1-6), 2007: 15(1-6), 2008: 16(1-6), 2009: 17(1-6), 2010: 18(1-7), 2011: 19(1-7), 2012: 20(1-4, 6-7), 2013: 21(1-3, 6-7), 2014: 22(1-6), 2015: 23(2, 4-7), 2016: 24(1-7), 2017: 25(1-7), 2018: 26(1-7), 2019/2020: 27(1-7), 2020: 28(1-8), 2021: 29(1, S 1, 2-7), 2022: 30(1, S 1, 2-7), 2023: 31(1, S 1, 2-7), 2024: 32(1-5), 2025: 33(1-7), 2026: 34(1-2)
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LOCKSS Archive
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In Progress
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2026-04-27
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20, 27
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LOCKSS Archive
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Preserved
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2026-04-27
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21 to 26
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Library of Congress
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Preserved
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2025-04-07
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26 (1 to 7); 27 (1 to 7); 28 (1 to 8); 29 (1, S1, 2 to 7); 30 (1, S1, 2 to 7); 31 (1, S1, 2 to 7); 32 (1 to 5)
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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 : 14 (1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 7); 19 (1 to 5)
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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 : 14 (1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 7); 19 (1 to 5)
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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 : 2 (1 to 7); 3 (Suppl 1, 1 to 7); 19 (6, 7); 21 (1 to 7); 22 (1 to 7); 23 (1 to 7); 24 (1 to 7); 25 (1 to 7); 26 (1 to 7); 27 (1 to 7); 28 (1 to 8); 29 (Suppl 1, 1 to 7); 31 (1 to 7); 32 (1 to 7)
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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 : 2 (1 to 7); 3 (Suppl 1, 1 to 7); 19 (6, 7); 21 (1 to 7); 22 (1 to 7); 23 (1 to 7); 24 (1 to 7); 25 (1 to 7); 26 (1 to 7); 27 (1 to 7); 28 (1 to 8); 29 (Suppl 1, 1 to 7); 31 (1 to 7); 32 (1 to 7)
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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 : 14 (1-4, 6); 15 (1, 3-6); 16 (1-6); 17 (1-6); 18 (1-7); 19 (1-7); 20 (1-6); 21 (1-7); 22 (1-7); 23 (1-7); 24 (1-7); 25 (1-7); 26 (1-7); 27 (1-5)
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