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