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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 53 (1 to 12); 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 12); 63 (1 to 12); 64 (1 to 12); 65 (1 to 12); 66 (1 to 12); 67 (1 to 12); 68 (1 to 12); 69 (1 to 7, 10)
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Portico
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Preserved
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2026-04-02
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Preserved : 2010: 53(1, S 1, 2-12), 2011: 54(1-12), 2012: 55(1-9, 12), 2013: 56(1-12), 2014: 57(1-10, 12), 2015: 58(5-12), 2016: 59(1-12), 2017: 60(1-12), 2018: 61(1-12), 2019: 62(1-12), 2020: 63(1-12), 2021: 64(1-12), 2022: 65(1-12), 2023: 66(1-12), 2024: 67(1-12), 2025: 68(1-12), 2025/2026: 69(1-8, 10)
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LOCKSS Archive
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In Progress
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2026-03-30
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55, 62
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LOCKSS Archive
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Preserved
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2026-03-30
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56 to 61
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CLOCKSS Archive
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Preserved
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2026-03-30
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53 to 69
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Library of Congress
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Preserved
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2025-04-07
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61 (3 to 12); 62 (1 to 12); 63 (1 to 12); 64 (1 to 12); 65 (1 to 12); 66 (1 to 12); 67 (1 to 12); 68 (1 to 3, 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 : 6 (1 to 9, 11, 12); 54 (Suppl 2, 1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1 to 9, 11, 12); 58 (1 to 9, 11, 12); 59 (1 to 9, 11, 12); 61 (1 to 9, 11, 12); 62 (1 to 9, 11, 12); 63 (1 to 9, 11, 12); 64 (1 to 9, 11, 12); 65 (1 to 9, 11, 12); 66 (1 to 9, 11, 12); 67 (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 : 6 (1 to 9, 11, 12); 54 (Suppl 2, 1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1 to 9, 11, 12); 58 (1 to 9, 11, 12); 59 (1 to 9, 11, 12); 61 (1 to 9, 11, 12); 62 (1 to 9, 11, 12); 63 (1 to 9, 11, 12); 64 (1 to 9, 11, 12); 65 (1 to 9, 11, 12); 66 (1 to 9, 11, 12); 67 (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 : 53 (7-12); 54 (supplement-1, 1-12); 55 (1-12); 56 (1-9, 11, 12); 57 (1-12); 58 (1-12); 59 (1-12); 60 (1-12); 61 (1-12); 62 (1-8, 11, 12); 63 (1-4)
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