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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 47 (1 to 12); 48 (, 1 to 12); 49 (, 1 to 12); 50 (, 1 to 12); 51 (, 1 to 12); 52 (, 1 to 12); 53 (, 1 to 11); 54 (, 1 to 12); 55 (, 1 to 12); 56 (, 1 to 12); 57 (, 1 to 12); 58 (, 1 to 12); 59 (, 1 to 12); 60 (, 1 to 12); 61 (, 1 to 12); 62 (, 1 to 7); 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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47 to 63
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Portico
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Preserved
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2026-02-12
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Preserved : 2010: 47(1-12), 2011: 48(1-12), 2012: 49(1-12), 2013: 50(1-12), 2014: 51(1-12), 2015: 52(1-12), 2016: 53(1-11), 2017: 54(1-12), 2018: 55(1-12), 2019: 56(1-12), 2020: 57(1-12), 2021: 58(1, S 1, 2-12), 2022: 59(1-12), 2023: 60(1-12), 2024: 61(1-10), 2025: 62(1-12), 2026: 63(1-2)
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LOCKSS Archive
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In Progress
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2026-02-09
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49, 56
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LOCKSS Archive
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Preserved
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2026-02-09
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50 to 55
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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 : 5 (1 to 9, 11, 12); 6 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11); 54 (1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1 to 9, 11, 12); 58 (Suppl 1, 1 to 9, 11, 12); 59 (1 to 9, 11, 12); 61 (1 to 9, 11, 12)
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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 : 5 (1 to 9, 11, 12); 6 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11); 54 (1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1 to 9, 11, 12); 58 (Suppl 1, 1 to 9, 11, 12); 59 (1 to 9, 11, 12); 61 (1 to 9, 11, 12)
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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 : 47 (1-12); 48 (1-12); 49 (1-12); 50 (1-8, 10-12); 51 (1-12); 52 (1-12); 53 (1-11); 54 (1-12); 55 (1-12); 56 (1-10)
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