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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 to 3); 2 (1 to 6); 3 (1 to 6, 7/8); 4 (1 to 8); 5 (1 to 6, 7/8); 6 (1 to 8); 7 (1 to 10); 8 (1 to 12); 9 (1 to 12); 10 (1 to 12); 11 (1 to 12); 12 (1 to 6, 7-8, 9 to 12); 13 (1 to 12); 14 (1 to 12); 15 (1 to 6, 7-8, 9, 10, 11-12); 16 (1 to 12); 17 (1 to 12); 18 (1 to 12); 19 (1 to 12); 20 (1 to 12); 21 (1 to 12); 22 (1 to 12); 23 (8 to 12); 24 (1 to 10, 11-12); 25 (1 to 7, 8-9, 10-11, 12); 26 (1 to 5, 6-7, 8 to 12); 27 (1 to 12); 28 (1 to 3, 5 to 12); 29 (1 to 12); 30 (1 to 3)
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Portico
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Preserved
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2026-04-23
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Preserved : 1997: 1(2)
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Portico
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Preserved
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2026-04-23
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Preserved : 2001: 5(3-5, 7-8), 2001/2002: 6(1-5, 7), 2003: 7(5, 7-8), 2004: 8(7), 2005: 9(6, 11-12), 2006: 10(2-6), 2007: 11(1, 3-11), 2008: 12(1-2, 4, 6-12), 2009: 13(1-12), 2010: 14(1-2, 4-12), 2011: 15(1-12), 2012: 16(1-8, 11-12), 2013: 17(1-10), 2014: 18(1-11), 2015: 19(3-12), 2016: 20(1-12), 2017: 21(1-12), 2017/2018: 22(1-12), 2019: 23(1-12), 2019/2020: 24(1-12), 2021: 25(1-12), 2022: 26(1-12), 2023: 27(1-12), 2024: 28(1-6, 8-12), 2025: 29(1-12), 2026: 30(1-5)
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CLOCKSS Archive
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Preserved
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2026-04-13
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1 to 30
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LOCKSS Archive
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Preserved
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2026-04-13
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12 to 22
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LOCKSS Archive
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In Progress
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2026-04-13
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23
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Library of Congress
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Preserved
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2025-04-07
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21 (12); 22 (3 to 12); 23 (1 to 12); 24 (1 to 11-12); 25 (1 to 8-9, 10-11, 12); 26 (1 to 6-7, 8 to 12); 27 (1 to 12); 28 (1 to 3-4, 5 to 11)
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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 9, 11, 12); 2 (1 to 9, 11, 12); 3 (1 to 7); 4 (1 to 8); 5 (1 to 7); 6 (1 to 8); 7 (1 to 9); 8 (1 to 9, 11, 12); 9 (1 to 9, 11, 12); 11 (1 to 9, 11, 12); 12 (1 to 7, 9, 11, 12); 13 (1 to 9, 11, 12); 14 (1 to 9, 11, 12); 15 (1 to 7, 9, 11); 16 (1 to 9, 11, 12); 17 (1 to 9, 11, 12); 18 (1 to 9, 11, 12); 19 (1 to 9, 11, 12); 21 (1 to 9, 11, 12); 22 (1 to 9, 11, 12); 23 (1 to 9, 11, 12); 24 (1 to 9, 11-12); 25 (1-11, 2 to 7, 8-9, 12); 26 (1 to 5, 6-7, 8, 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1 to 3, 5 to 9, 11, 12)
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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 9, 11, 12); 2 (1 to 9, 11, 12); 3 (1 to 7); 4 (1 to 8); 5 (1 to 7); 6 (1 to 8); 7 (1 to 9); 8 (1 to 9, 11, 12); 9 (1 to 9, 11, 12); 11 (1 to 9, 11, 12); 12 (1 to 7, 9, 11, 12); 13 (1 to 9, 11, 12); 14 (1 to 9, 11, 12); 15 (1 to 7, 9, 11); 16 (1 to 9, 11, 12); 17 (1 to 9, 11, 12); 18 (1 to 9, 11, 12); 19 (1 to 9, 11, 12); 21 (1 to 9, 11, 12); 22 (1 to 9, 11, 12); 23 (1 to 9, 11, 12); 24 (1 to 9, 11-12); 25 (1-11, 2 to 7, 8-9, 12); 26 (1 to 5, 6-7, 8, 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1 to 3, 5 to 9, 11, 12)
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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 : 1 (1-3); 2 (1-6); 3 (1-6, 7-8); 4 (1-8); 5 (1-6, 7-8); 6 (1-8); 7 (1-10); 8 (1-12); 9 (1-12); 10 (1-12); 11 (1-6, 8-12); 12 (1-6, 7-8, 9-12); 13 (1-12); 14 (1-12); 15 (1-6, 7-8, 9, 10, 11-12); 16 (1-12); 17 (1-12); 18 (1-12); 19 (1-12); 20 (1-12); 21 (1-12); 22 (1-12); 23 (1-11); 49 (12)
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