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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 (1-2, 3, 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 4, 24); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1-2, 3, 4); 20 (1 to 4); 21 (1, 2, 3-4); 22 (1 to 4); 23 (1 to 4); 24 (1, 2, 3-4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 30 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 4, 5-6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (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 39
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Portico
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Preserved
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2026-04-23
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Preserved : 1990: 2(4)
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Portico
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Preserved
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2026-04-23
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Preserved : 1993: 6(1)
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Portico
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Preserved
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2026-04-23
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Preserved : 2000: 12(3)
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Portico
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Preserved
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2026-04-23
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Preserved : 2005: 18(2)
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Portico
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Preserved
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2026-04-23
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Preserved : 2007: 19(3-4), 2007/2008: 20(1, 4), 2008/2009: 21(1-4), 2009: 22(1-3), 2010/2011: 23(1-4), 2011: 24(1-4), 2012: 25(1-3), 2013: 26(1-4), 2014: 27(1-6), 2015: 28(1-6), 2016: 29(1-6), 2017: 30(1-6), 2018: 31(1-6), 2019: 32(1-6), 2019/2020: 33(1-6), 2021: 34(1-6), 2022: 35(1-6), 2023: 36(2-6), 2024: 37(1-6), 2025: 38(1-6), 2025/2026: 39(1-3)
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LOCKSS Archive
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In Progress
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2026-04-27
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25, 32
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LOCKSS Archive
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Preserved
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2026-04-27
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26 to 31
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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 4); 3 (1 to 6); 9 (3, 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1, 3, 4); 21 (1 to 3); 22 (1 to 4); 23 (1 to 4); 24 (1 to 3); 25 (1 to 4); 26 (1 to 4); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 4, 5-6); 36 (1 to 6); 37 (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 4); 2 (1 to 4); 3 (1 to 6); 9 (3, 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1, 3, 4); 21 (1 to 3); 22 (1 to 4); 23 (1 to 4); 24 (1 to 3); 25 (1 to 4); 26 (1 to 4); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 4, 5-6); 36 (1 to 6); 37 (1 to 6)
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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 : 10 (1-4); 11 (1-4); 12 (1-4); 13 (1-4); 14 (1-4); 15 (1-4); 16 (1-4); 17 (1-4); 18 (1-4); 19 (1-2, 3, 4); 20 (1-4); 21 (1, 2, 3-4); 22 (1-3); 23 (1-4); 24 (1, 2, 3-4); 25 (1-4); 26 (1-4); 27 (1-6); 28 (1-6); 29 (1-6); 30 (1-6); 31 (1-6); 32 (1-5)
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