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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59; 60 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (Suppl, 1 to 4); 68 (1 to 4); 69 (2); 70 (1); 71; 72 (Suppl, 1 to 4); 73 (1, 2, 4); 74 (Suppl, 1 to 4); 75 (Suppl, 1 to 4); 76 (2 to 4); 77 (1 to 4)
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CLOCKSS Archive
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Preserved
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2026-04-13
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52 to 78
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Portico
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Preserved
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2026-04-16
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Preserved : 2000: 52(1-4), 2001: 53(1-4), 2002: 54(1-4), 2003: 55(1-4), 2004: 56(1-4), 2005: 57(1-4), 2006: 58(1-4), 2007: 59(1-4), 2008: 60(1-4), 2009: 61(1-4), 2010: 62(1-4), 2011: 63(1-4), 2012: 64(1-4), 2013: 65(1-4), 2014: 66(1-4), 2015: 67(1, S 1, 2-4), 2016: 68(1-4), 2017: 69(1-4), 2018: 70(1-4), 2019: 71(1-4), 2020: 72(1, S 1, 2-4), 2021: 73(1, S 1, 2-4), 2022: 74(1, S 1, 2-4), 2023: 75(1, S 1, 2-4), 2024: 76(1-4), 2025: 77(1-4), 2026: 78(1)
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LOCKSS Archive
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In Progress
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2026-04-13
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64, 71
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LOCKSS Archive
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Preserved
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2026-04-13
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65 to 70
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Library of Congress
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Preserved
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2025-04-07
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70 (S1, 1 to 4); 71 (S1, 1 to 4); 72 (1, S1, 2 to 4); 73 (S1, 1 to 4); 74 (S1, 1 to 4); 75 (1, S1, 2 to 4); 76 (1 to 3)
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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 4); 7 (Suppl 1, 1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (Suppl 1, 1 to 4); 66 (Suppl 1, 1 to 4); 67 (Suppl 1, 1 to 4); 68 (1 to 4); 69 (Suppl 2, 1 to 4); 71 (Suppl 1, 1 to 4); 72 (Suppl 1, 1 to 4); 73 (Suppl 1, 1 to 4); 74 (Suppl 1, 1 to 4); 75 (1 to 3); 76 (1 to 4)
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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 4); 7 (Suppl 1, 1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (Suppl 1, 1 to 4); 66 (Suppl 1, 1 to 4); 67 (Suppl 1, 1 to 4); 68 (1 to 4); 69 (Suppl 2, 1 to 4); 71 (Suppl 1, 1 to 4); 72 (Suppl 1, 1 to 4); 73 (Suppl 1, 1 to 4); 74 (Suppl 1, 1 to 4); 75 (1 to 3); 76 (1 to 4)
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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 : 52 (1-4); 53 (1-4); 54 (1-4); 55 (1-4); 56 (1-4); 57 (1-4); 58 (1-4); 59 (1-4); 60 (1-4); 61 (1-4); 62 (1-4); 63 (2-4); 64 (1-4); 65 (supplement-1, 1-4); 66 (supplement-1, 1, 2, 4); 67 (supplement-1, 1-3); 68 (1-4); 69 (supplement-1, 1-4); 70 (supplement-1, 1, 2, 4); 71 (supplement-1, 1, 2)
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