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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 3 (1 to 3); 4 (1 to 3); 5 (1 to 3); 6 (1 to 3); 7 (1 to 3); 8 (1 to 3); 9 (1 to 3); 10 (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 6); 17 (1 to 6); 18 (1 to 12); 19 (1 to 12); 20 (1 to 12); 21 (1 to 12); 22 (1 to 12); 23 (1, 6 to 12); 24 (1 to 12); 25 (1 to 12); 26 (1 to 12); 27 (1 to 12); 28 (Suppl, 1); 29 (Suppl, 1); 30
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Portico
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Preserved
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2026-04-09
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Preserved : 1999: 3(1-3), 2000: 4(1-3), 2001: 5(1-3), 2002: 6(1, 3), 2003: 7(1-3), 2004: 8(1-3), 2005: 9(1-3), 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(1-6), 2013: 17(1-6), 2014: 18(1-12), 2015: 19(3-12), 2016: 20(1-12), 2017: 21(1-12), 2018: 22(1-12), 2019: 23(1-12), 2019/2020: 24(1-12), 2021: 25(1-12), 2022: 26(1-12), 2023: 27(2-12), 2024: 28(1, S 1, S 2), 2025: 29(1, S 1), 2025: 30(1)
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CLOCKSS Archive
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Preserved
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2026-04-06
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3 to 30
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LOCKSS Archive
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In Progress
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2026-04-06
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16
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LOCKSS Archive
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Preserved
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2026-04-06
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17 to 23
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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 (1 to 9, 11, 12); 3 (1 to 3); 4 (1 to 3); 5 (1 to 3); 6 (1 to 3); 7 (1 to 3); 8 (Suppl 2, 1 to 3); 9 (1 to 3); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (Suppl 1, 1 to 4); 15 (1 to 4); 16 (1 to 6); 17 (Suppl 1, 1 to 6); 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); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (Suppl 2, 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 (1 to 4); 2 (1 to 9, 11, 12); 3 (1 to 3); 4 (1 to 3); 5 (1 to 3); 6 (1 to 3); 7 (1 to 3); 8 (Suppl 2, 1 to 3); 9 (1 to 3); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (Suppl 1, 1 to 4); 15 (1 to 4); 16 (1 to 6); 17 (Suppl 1, 1 to 6); 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); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (Suppl 2, 1)
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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 (1-3); 4 (1-3); 5 (1-3); 6 (1-3); 7 (1-3); 8 (1-3); 9 (1-3); 10 (1-4); 11 (1-4); 12 (1-4); 13 (1-4); 14 (supplement-1, 1-4); 15 (supplement-1, 1-4); 16 (1-6); 17 (supplement-1, 1-6); 18 (1-12); 19 (2-12); 20 (1-12); 21 (1-7, 9-12); 22 (1-12); 23 (1-10)
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