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CLOCKSS Archive
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Preserved
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2026-02-09
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1, 2, 4 to 24
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Scholars Portal
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Preserved
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2025-09-02
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Preserved :
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Portico
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Preserved
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2026-02-12
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Preserved : 2003: 1(1), 2004: 2(1-4), 2005: 3(1-4), 2006: 4(1-4), 2007: 5(1-4), 2008: 6(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 2009: 7(1), 2010: 8(1, S 1), 2011: 9(1, S 1, 2, S 2), 2012: 10(1, S 1, 2, S 2, 3, S 3, 4, S 4), 2013: 11(1), 2014: 12(1), 2015: 13(1-2), 2016: 14(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 2017: 15(1-2), 2018: 16(1), 2019: 17(1-2), 2020: 18(1), 2021: 19(1), 2022: 20(1), 2023: 21(1, S 1), 2024: 22(1, S 1), 2025: 23(1)
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LOCKSS Archive
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In Progress
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2026-02-09
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CLOCKSS Archive
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Preserved
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2026-02-09
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6 to 12
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LOCKSS Archive
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In Progress
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2026-02-09
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10, 17
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LOCKSS Archive
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Preserved
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2026-02-09
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11 to 16
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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 : 1 (2 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1, 2); 7 (1); 8; 9 (2); 11 (1); 12; 13 (Suppl 2, 1); 14; 15 (2); 16 (1); 17 (2); 18 (1); 19; 21 (Suppl 1, 1)
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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 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1, 2); 7 (1); 8; 9 (2); 11 (1); 12; 13 (Suppl 2, 1); 14; 15 (2); 16 (1); 17 (2); 18 (1); 19; 21 (Suppl 1, 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; 17 (Suppl 2, 1); 18; 19; 21 (Suppl 1, 1); 22 (Suppl 1, 1); 23
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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; 17 (Suppl 2, 1); 18; 19; 21 (Suppl 1, 1); 22 (Suppl 1, 1); 23
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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 : 2 (3, 4); 3 (2-4); 4 (1, 2, 4); 5 (1-4); 6 (2); 7 (1); 8; 9; 10; 11; 12
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British Library
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Preserved
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2019-09-18
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Preserved : 1 (1), 3 (1 to 4), 4 (1 to 4), 5 (1 to 4), 6 (1 to 2), 7 (1), 8 (1; Supp 1), 9 (1; Supp 1 to Supp 2), 10 (1; Supp 1 to Supp 4)
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