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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 25 (6); 33 (, 2, 3, 5); 34 (, 1, 3 to 6); 35 (, 1 to 6); 36 (, 1 to 6); 37 (, 1 to 6); 38 (, 1 to 6); 39 (, 1 to 6); 40 (, 1 to 6); 41 (, 1 to 6); 42 (, 1 to 6); 43 (, 1 to 6); 44 (, 1 to 6); 45 (, 1, 3 to 6); 46 (, 1 to 6); 47 (, 1 to 6); 48 (, 1 to 6); 49 (, 1 to 6); 50 (, 2 to 6); 51 (, 1); 1999; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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CLOCKSS Archive
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Preserved
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2026-02-09
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1, 25, 33 to 52
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Portico
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Preserved
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2026-02-12
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Preserved : 1975: 1(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1999: 25(6)
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Portico
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Preserved
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2026-02-12
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Preserved : 2007: 33(1, S 1, 2, S 2, 3-6), 2008: 34(1-6), 2009: 35(1, S 1, 2-6), 2010: 36(1, S 1, 2-6), 2011: 37(1-6), 2012: 38(1, S 1, 2-6), 2013: 39(1-6), 2014: 40(1-6), 2015: 41(1-6), 2016: 42(1-6), 2017: 43(1-6), 2018: 44(1-6), 2019: 45(1-6), 2019/2020: 46(1, S 1, 2-6), 2021: 47(1-6), 2022: 48(1, S 1, 2-6), 2023: 49(1, S 1, 2-6), 2024: 50(1, S 1, 2, S 2, 3-4, 6), 2025: 51(1, S 1), 2026: 52(1)
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LOCKSS Archive
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In Progress
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2026-02-09
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38, 45
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LOCKSS Archive
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Preserved
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2026-02-09
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39 to 44
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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 : 3 (1 to 6); 4 (1 to 6); 5 (Suppl 2, 1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 3, 5, 6); 26 (1 to 6); 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 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (Suppl 1, 1 to 6); 45 (Suppl 1, 1 to 6); 46 (Suppl 1, 1 to 6); 47 (1 to 6); 48 (Suppl 1, 1 to 6); 49 (1 to 6)
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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 : 3 (1 to 6); 4 (1 to 6); 5 (Suppl 3, 1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 3, 5, 6); 26 (1 to 6); 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 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (Suppl 1, 1 to 6); 45 (Suppl 1, 1 to 6); 46 (Suppl 1, 1 to 6); 47 (1 to 6); 48 (Suppl 1, 1 to 6); 49 (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 : 25 (6); 33 (1-6); 34 (1-6); 35 (1-6); 36 (supplement-1, 1-6); 37 (1-6); 38 (1-6); 39 (supplement-1, 1-6); 40 (1-6); 41 (supplement-2, 1-6); 42 (supplement-1, 1-6); 43 (supplement-1, 1-6); 44 (1-6); 45 (1-5)
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