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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); 2 (1 to 4); 3 (1, 2-3, 4); 4 (1 to 4); 5 (1, 2, 3-4); 6 (1 to 3); 7 (1 to 3); 8 (1 to 3); 9 (1 to 3); 10 (1 to 3); 11 (1 to 3); 12 (1 to 3); 13 (1 to 3); 14 (1, 2-3); 15 (1 to 3); 16 (1 to 3); 17 (1, 2-3); 18 (1 to 3); 19 (1 to 3); 20 (1 to 3); 21 (1 to 3); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1-2, 3, 4); 26 (1, 2-3, 4); 27 (1 to 4); 28 (1 to 4); 29 (1, 2, 3-4); 30 (1 to 4); 31 (1, 2-3, 4); 32 (1 to 4); 33 (1-2, 3, 4); 34 (1-2, 3, 4); 35 (1, 2-3, 4); 36 (1-2, 3, 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1 to 8); 41 (1 to 8); 42 (1 to 8); 43 (1 to 8); 44 (1, 2, 3-4, 5 to 8); 45 (1 to 8); 46 (1 to 8); 47 (1 to 8); 48 (1, 2-3, 4-5, 6 to 8); 49 (1 to 4); 50 (1)
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CLOCKSS Archive
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Preserved
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2026-04-13
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1 to 50
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Portico
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Preserved
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2026-04-16
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Preserved : 1999: 7(1)
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Portico
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Preserved
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2026-04-16
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Preserved : 2000: 9(2)
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Portico
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Preserved
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2026-04-16
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Preserved : 2002: 12(2)
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Portico
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Preserved
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2026-04-16
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Preserved : 2004: 17(2-3)
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Portico
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Preserved
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2026-04-16
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Preserved : 2007: 23(1, 3), 2008: 24(1-4), 2008: 25(1-4), 2009: 26(1-4), 2009: 27(1-4), 2010: 28(1, 3-4), 2010: 29(1-4), 2011: 30(1-4), 2011: 31(1-4), 2012: 32(1, 3-4), 2012: 33(1-2), 2013: 34(1-4), 2013: 35(1-4), 2014: 36(1-4), 2014: 37(1-3), 2015: 38(2, 4), 2015: 39(1-4), 2016: 40(1-8), 2017: 41(1-8), 2018: 42(1-8), 2019: 43(1-8), 2019/2020: 44(1-8), 2021: 45(1-8), 2022: 46(1-8), 2023: 47(1-8), 2024: 48(1-8), 2025: 49(1-4), 2025/2026: 50(1-2)
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LOCKSS Archive
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In Progress
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2026-04-13
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32, 33, 43
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LOCKSS Archive
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Preserved
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2026-04-13
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34 to 42
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Library of Congress
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Preserved
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2025-04-07
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42 (2 to 8); 43 (1 to 8); 44 (1 to 3-4, 5 to 8); 45 (1 to 8); 46 (1 to 8); 47 (1 to 8); 48 (1, 2-3, 4-5, 6 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 3); 2 (1 to 3); 3 (1 to 4); 4 (1 to 8); 5 (1 to 3); 6 (1 to 3); 7 (1 to 3); 8 (1 to 3); 9 (1 to 3); 11 (1 to 3); 12 (1 to 3); 13 (1 to 3); 14 (1, 2); 15 (1 to 3); 16 (1 to 3); 17 (1, 2); 18 (1 to 3); 19 (1 to 3); 21 (1 to 3); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1, 3, 4); 26 (1, 2, 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 3); 31 (1, 2, 4); 32 (1 to 4); 33 (1, 3, 4); 34 (1, 3, 4); 35 (1, 2, 4); 36 (1, 3, 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 8); 42 (1 to 8); 43 (1 to 8); 44 (1, 2, 3-4, 5 to 8); 45 (1 to 8); 46 (1 to 8); 47 (1 to 8); 48 (1, 2, 4, 6 to 8)
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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 3); 2 (1 to 3); 3 (1 to 4); 4 (1 to 8); 5 (1 to 3); 6 (1 to 3); 7 (1 to 3); 8 (1 to 3); 9 (1 to 3); 11 (1 to 3); 12 (1 to 3); 13 (1 to 3); 14 (1, 2); 15 (1 to 3); 16 (1 to 3); 17 (1, 2); 18 (1 to 3); 19 (1 to 3); 21 (1 to 3); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1, 3, 4); 26 (1, 2, 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 3); 31 (1, 2, 4); 32 (1 to 4); 33 (1, 3, 4); 34 (1, 3, 4); 35 (1, 2, 4); 36 (1, 3, 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 8); 42 (1 to 8); 43 (1 to 8); 44 (1, 2, 3-4, 5 to 8); 45 (1 to 8); 46 (1 to 8); 47 (1 to 8); 48 (1, 2, 4, 6 to 8)
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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 (1-3); 6 (1-3); 7 (1-3); 8 (1-3); 9 (1-3); 10 (1-3); 11 (1-3); 12 (1-3); 13 (1-3); 14 (1, 2); 15 (1-3); 16 (1-3); 17 (1, 2); 18 (1-3); 19 (1-3); 20 (1-3); 21 (1, 3); 22 (1-4); 23 (1-4); 24 (1-4); 25 (1-2, 3, 4); 26 (1, 2-3, 4); 27 (1-3); 28 (1, 3, 4); 29 (1, 2, 3-4); 30 (1-4); 31 (1, 2-3, 4); 32 (1-4); 33 (1-2, 3, 4); 34 (1-2, 3, 4); 35 (1, 2-3, 4); 36 (1-2, 3, 4); 37 (1-4); 38 (1-4); 39 (1-4); 40 (1-8); 41 (1-8); 42 (1-8); 43 (1-8); 127 (1)
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