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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 5); 2 (1 to 6); 3 (1 to 6); 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 7 (1 to 6); 8 (1 to 6); 9 (Suppl, 1, 2, 4-6); 10 (Suppl, 1, 3-4, 5-6); 11 (1, 3-4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 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 (1 to 12); 24 (1 to 12); 25 (1 to 12); 26 (1 to 12); 27 (1)
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LOCKSS Archive
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In Progress
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2026-05-04
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1 to 8, 20
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CLOCKSS Archive
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Preserved
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2026-05-04
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1 to 27
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Portico
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Preserved
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2026-04-30
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Preserved : 2000: 1(1-5), 2001: 2(1-6), 2002: 3(1-6), 2003: 4(1-6), 2004: 5(1-6), 2005: 6(1-6), 2006: 7(1-6), 2007: 8(1-6), 2008: 9(1, S 1, 2-6), 2009: 10(1-2, S 1, 3-6), 2010: 11(1-4), 2011: 12(1-4), 2012: 13(1-3), 2013: 14(1-4), 2014: 15(1-4), 2015: 16(1-12), 2016: 17(1-12), 2017: 18(1-12), 2018: 19(1-12), 2019: 20(1-12), 2020: 21(1-12), 2021: 22(1-12), 2022: 23(1-12), 2023: 24(1-12), 2024: 25(1-12), 2025: 26(1-12), 2026: 27(1)
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LOCKSS Archive
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Preserved
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2026-05-04
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9 to 19
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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 (Suppl 1, 1 to 5); 2 (1 to 9, 11, 12); 3 (1 to 6); 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 7 (1 to 6); 8 (1 to 6); 9 (Suppl 1, 1, 2, 4); 11 (Suppl 1, 1, 3); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 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 to 9, 11, 12)
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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 (Suppl 1, 1 to 5); 2 (1 to 9, 11, 12); 3 (1 to 6); 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 7 (1 to 6); 8 (1 to 6); 9 (Suppl 2, 1, 2, 4); 11 (Suppl 1, 1, 3); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 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 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 : 2 (6); 3 (3); 6 (2, 4); 8 (6); 9 (1, 2-3, 4-6); 10 (1-2, 3-4, 5-6); 11 (supplement-1, 1-2, 3-4); 12 (1-4); 13 (1-4); 14 (1-4); 15 (1-4); 16 (1-12); 17 (1, 2, 4-12); 18 (1-12); 19 (1-12); 20 (1-10)
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