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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 5 (1 to 4); 6 (, 1 to 4); 7 (, 1 to 4); 8 (, 1 to 6); 9 (, 1 to 6); 10 (, 1 to 6); 11 (, 1 to 6); 12 (, 1 to 6); 13 (, 1 to 6); 14 (, 1 to 6); 15 (, 1 to 6); 16 (, 1 to 6); 17 (, 1 to 6); 18 (, 1 to 6); 19 (, 1 to 6); 20 (, 1 to 6); 21 (, 1 to 4); 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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CLOCKSS Archive
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Preserved
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2026-02-09
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5 to 22
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Portico
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Preserved
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2026-02-12
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Preserved : 2009: 5(1-4), 2010: 6(1-4), 2011: 7(1-4), 2012: 8(1-6), 2013: 9(1-6), 2014: 10(1-6), 2015: 11(2-6), 2016: 12(1-6), 2017: 13(1-6), 2018: 14(1-6), 2019: 15(1-6), 2019/2020: 16(1-6), 2021: 17(1-6), 2022: 18(1-6), 2023: 19(2-6), 2024: 20(1-6), 2025: 21(1-6), 2026: 22(1)
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LOCKSS Archive
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In Progress
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2026-02-09
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8, 15
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LOCKSS Archive
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Preserved
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2026-02-09
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9 to 14
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Library of Congress
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Preserved
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2025-04-07
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14 (2 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 20 (1 to 5); 21 (1)
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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 (2 to 6); 7 (1 to 4); 8 (1 to 6); 9 (Suppl 1, 1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (2 to 6); 19 (1 to 6)
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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 (2 to 6); 7 (1 to 4); 8 (1 to 6); 9 (Suppl 1, 1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (2 to 6); 19 (1 to 6)
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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 : 5 (1-4); 6 (1-4); 7 (1-4); 8 (1-6); 9 (supplement-1, 1-6); 10 (1-6); 11 (1-6); 12 (1-6); 13 (1-6); 14 (1-6); 15 (1-6)
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