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