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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); 4 (2 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1, 2, 3-4); 10 (1 to 4); 11 (1, 2, 3-4); 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 (1 to 6); 20 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 12); 25 (1 to 12); 26 (1 to 12, 13-14, 15 to 18); 27 (1 to 18); 28 (1 to 18); 29 (1 to 18); 30 (1 to 18); 31 (1 to 18); 32 (1 to 18); 33 (1 to 3)
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CLOCKSS Archive
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Preserved
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2026-04-27
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1 to 33
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Portico
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Preserved
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2026-04-23
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Preserved : 1997: 4(1, 3-4)
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Portico
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Preserved
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2026-04-23
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Preserved : 1999: 6(4)
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Portico
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Preserved
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2026-04-23
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Preserved : 2000: 7(4)
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LOCKSS Archive
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Preserved
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2026-04-27
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7 to 15, 19 to 26
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Portico
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Preserved
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2026-04-23
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Preserved : 2007: 14(3, 5), 2008: 15(2-6), 2009: 16(1-6), 2010: 17(1-6), 2011: 18(1-6), 2012: 19(1, 3-4, 6), 2013: 20(1-3, 5), 2014: 21(1-6), 2015: 22(1-6), 2016: 23(1-6), 2017: 24(1-12), 2018: 25(1-12), 2019: 26(1-18), 2019/2020: 27(1-18), 2021: 28(1-18), 2022: 29(1-18), 2023: 30(1, 3-18), 2024: 31(1-17), 2025: 32(1-4, 6-18), 2026: 33(1-4)
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LOCKSS Archive
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In Progress
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2026-04-27
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16 to 18
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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 : 4 (1-4); 5 (1-4); 6 (1-4); 7 (1-4); 8 (1-4); 9 (1-3); 10 (1-4); 11 (1-3); 12 (1-6); 13 (1-6); 14 (1, 2, 4-6); 15 (1-6); 16 (1-6); 17 (1-6); 18 (1-6); 19 (1-6); 20 (1-6); 21 (1-6); 22 (1-6); 23 (1-6); 24 (1-12); 25 (1-12); 26 (1-12, 13-14, 15-18); 30 (6); 48 (1); 94 (2); 144 (3)
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Library of Congress
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Preserved
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2025-04-07
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23 (3); 24 (11, 12); 25 (1 to 12); 26 (1 to 13-14, 15 to 18); 27 (1 to 18); 28 (1 to 18); 29 (1 to 18); 30 (1 to 18); 31 (1 to 15)
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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 6); 3 (1 to 9, 11 to 18); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 3); 11 (1 to 3); 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 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (1 to 9, 11, 12, 13-14, 15 to 18); 27 (1 to 9, 11 to 18); 28 (1 to 9, 11 to 18); 29 (1 to 9, 11 to 18); 31 (1 to 9, 11 to 18)
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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 6); 3 (1 to 9, 11 to 18); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 3); 11 (1 to 3); 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 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (1 to 9, 11, 12, 13-14, 15 to 18); 27 (1 to 9, 11 to 18); 28 (1 to 9, 11 to 18); 29 (1 to 9, 11 to 18); 31 (1 to 9, 11 to 18)
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