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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 4, 5-6); 39 (1 to 4, 5-6); 40 (1 to 6); 41 (1, 2-3, 4 to 6); 42 (1, 2, 3-4, 5, 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (Suppl, 1 to 6); 48 (Suppl, 1 to 6); 49 (Suppl, 1 to 6); 50 (1 to 6); 51 (1, 2)
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CLOCKSS Archive
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Preserved
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2026-04-13
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33 to 51
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Portico
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Preserved
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2026-04-16
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Preserved : 2007: 33(1-6), 2008: 34(1-6), 2009: 35(1-6), 2010: 36(1-6), 2011: 37(1-6), 2012: 38(1-6), 2013: 39(1-6), 2014: 40(1-5), 2015: 41(1-6), 2016: 42(1-6), 2017: 43(1-6), 2018: 44(1-6), 2019/2020: 45(1-6), 2020: 46(1-6), 2021: 47(1, S 1, 2-6), 2022: 48(1, S 1, 2-5), 2023: 49(1, S 1, 2, S 2, 3, S 3, 4-6), 2024: 50(1-4), 2025: 51(1-6)
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LOCKSS Archive
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In Progress
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2026-04-13
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38, 45
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LOCKSS Archive
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Preserved
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2026-04-13
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39 to 44
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Library of Congress
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Preserved
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2025-04-07
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43 (5); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1, S1, 2 to 6); 48 (1, S1, 2 to 6); 49 (S1, 1, 2, S2, S3, 3 to 6); 50 (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 : 4 (1 to 6); 5 (1 to 4); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 4, 5-6); 39 (1 to 4, 5-6); 41 (1, 2-3, 4 to 6); 42 (1, 2, 3-4, 5, 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (Suppl 1, 1 to 6); 48 (Suppl 1, 1 to 6); 49 (1 to 5)
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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 (1 to 6); 5 (1 to 4); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 4, 5-6); 39 (1 to 4, 5-6); 41 (1, 2-3, 4 to 6); 42 (1, 2, 3-4, 5, 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (Suppl 1, 1 to 6); 48 (Suppl 1, 1 to 6); 49 (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 : 35 (4); 36 (1 to 6); 37 (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 : 35 (4); 36 (1 to 6); 37 (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 : 33 (1-6); 34 (1-6); 35 (1-6); 36 (1-6); 37 (1-6); 38 (1-4, 5-6); 39 (1-4, 5-6); 40 (1-6); 41 (1, 2-3, 4-6); 42 (1, 2, 3-4, 5, 6); 43 (1-6); 44 (1-6); 45 (1-4)
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