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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, 3, 4); 2 (3); 3 (2 to 6); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (s1, 1 to 4); 8 (s1, 1 to 4); 9 (s1, 1 to 4); 10 (s1, 1 to 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (Suppl, 2 to 4); 25 (1 to 4); 26 (1, 2, 4); 27 (2 to 4); 28 (1 to 4); 29 (1 to 4); 30 (1)
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CLOCKSS Archive
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Preserved
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2026-03-30
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4 to 10
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CLOCKSS Archive
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Preserved
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2026-03-30
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1 to 30
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Portico
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Preserved
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2026-04-02
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Preserved : 1997: 1(1-4), 1998: 2(1-4), 1999: 3(1-6), 2000: 4(1-4), 2001: 5(1-4), 2002: 6(1-4), 2003: 7(1-4), 2004: 8(1-4), 2005: 9(1-4), 2006: 10(1-4), 2007: 11(1-4), 2008: 12(1-4), 2009: 13(1-4), 2010: 14(1-4), 2011: 15(1-4), 2012: 16(1-4), 2013: 17(1-4), 2014: 18(1-3), 2015: 19(1, S 1, 2-4), 2016/2017: 20(1-4), 2017: 21(1-4), 2018: 22(1-4), 2019: 23(1, S 1, 2-4), 2020: 24(1, S 1, 2-4), 2021: 25(1, S 1, 2-4), 2022: 26(1, S 1, 2, S 2, 3-4), 2023: 27(1, S 1, 2-4), 2024: 28(1, S 1, 2-3), 2025: 29(1, S 1, 2-4), 2026: 30(1)
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LOCKSS Archive
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In Progress
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2026-03-30
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16, 23
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LOCKSS Archive
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Preserved
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2026-03-30
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17 to 22
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Library of Congress
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Preserved
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2025-04-07
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21 (4); 22 (1, S1, 2, S2, 3, 4); 23 (1, S1, 2 to 4); 24 (1, S1, 2 to 4); 25 (S1, 1 to 4); 26 (S1, 1, S2, 2 to 4); 27 (1, S1, 2 to 4); 28 (1 to 3)
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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 (1 to 4); 2 (Suppl 1, 1 to 4); 3 (1 to 6); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 11 (Suppl 1, 1 to 4); 12 (Suppl 1, 1 to 4); 13 (Suppl 2, 1 to 4); 14 (Suppl 1, 1 to 4); 15 (Suppl 1, 1 to 4); 16 (Suppl 1, 1 to 4); 17 (1 to 4); 18 (Suppl 1, 1 to 4); 19 (Suppl 2, 1 to 4); 21 (1 to 4); 22 (Suppl 1, 1 to 4); 23 (Suppl 1, 1 to 4); 24 (Suppl 1, 1 to 4); 25 (Suppl 1, 1 to 4); 26 (Suppl 2, 1 to 4); 27 (Suppl 1, 1 to 4); 28 (Suppl 1, 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 : ; 1 (1 to 4); 2 (Suppl 1, 1 to 4); 3 (1 to 6); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 11 (Suppl 1, 1 to 4); 12 (Suppl 1, 1 to 4); 13 (Suppl 2, 1 to 4); 14 (Suppl 1, 1 to 4); 15 (Suppl 1, 1 to 4); 16 (Suppl 1, 1 to 4); 17 (1 to 4); 18 (Suppl 1, 1 to 4); 19 (Suppl 2, 1 to 4); 21 (1 to 4); 22 (Suppl 1, 1 to 4); 23 (Suppl 1, 1 to 4); 24 (Suppl 1, 1 to 4); 25 (Suppl 1, 1 to 4); 26 (Suppl 2, 1 to 4); 27 (Suppl 1, 1 to 4); 28 (Suppl 1, 1 to 4)
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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 : 6 (3); 7 (4); 8 (3); 10; 11 (1-3); 12 (4); 13 (1); 14 (2-4); 15 (2); 16 (4); 17; 18 (2)
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