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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (2 to 6); 2 (1 to 6); 3 (1 to 6); 4 (1 to 6); 5 (1 to 6); 6 (1 to 4, 5-6); 7 (1 to 6); 8 (1 to 6); 9 (1 to 6); 10 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (Suppl, 1 to 6); 20 (1, 2)
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CLOCKSS Archive
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Preserved
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2026-05-25
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1 to 20
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Portico
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Preserved
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2026-05-28
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Preserved : 2007: 1(1-6), 2008: 2(1-6), 2009: 3(1-6), 2010: 4(1-6), 2011: 5(1-6), 2012: 6(1-6), 2013: 7(1-3, 6), 2014: 8(1-4, 6), 2015: 9(2-6), 2016: 10(1-6), 2017: 11(1-6), 2018: 12(1-6), 2019/2020: 13(1-6), 2020: 14(1-6), 2021: 15(1-6), 2022: 16(1-6), 2023: 17(1-6), 2024: 18(1-5), 2025: 19(1, S 1, 2-6), 2026: 20(1-4)
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LOCKSS Archive
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In Progress
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2026-05-25
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6, 13
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LOCKSS Archive
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Preserved
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2026-05-25
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7 to 12
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Library of Congress
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Preserved
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2025-04-07
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11 (6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 5)
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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 6); 2 (1 to 6); 3 (1 to 6); 4 (1, 2, 4 to 6); 5 (1 to 6); 6 (1 to 4, 5-6); 7 (1 to 6); 8 (1 to 6); 9 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6)
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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 6); 2 (1 to 6); 3 (1 to 6); 4 (1, 2, 4 to 6); 5 (1 to 6); 6 (1 to 4, 5-6); 7 (1 to 6); 8 (1 to 6); 9 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6)
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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 : 4 (2 to 6); 5 (1, 2)
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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 : 4 (2 to 6); 5 (1, 2)
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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, 3-6); 2 (1-6); 3 (1-6); 4 (1-6); 5 (1-6); 6 (1-4, 5-6); 7 (1-6); 8 (1-6); 9 (1-6); 10 (1-6); 11 (1-6); 12 (1-6); 13 (2-5)
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