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Library of Congress
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Preserved
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2025-04-07
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60 (1, S1); 61 (1); 62 (1, 2); 63 (1, 2); 64 (1, 2); 65 (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 : 53 (1); 54; 55; 57; 62 (2); 63 (1, 2); 65 (1, 2); 66 (1)
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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 : 53 (1); 54; 55; 57; 62 (2); 63 (1, 2); 65 (1, 2); 66 (1)
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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 : 48 (1); 49 (2-4); 50 (1); 51; 52; 53; 54; 55; 56; 57; 58; 59; 60 (supplement-1, 1); 61
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LOCKSS Archive
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In Progress
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2026-02-09
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CLOCKSS Archive
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Preserved
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2026-02-09
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48 to 66
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Portico
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Preserved
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2026-02-12
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Preserved : 2006: 48(1), 2007: 49(1-4), 2008: 50(1), 2009: 51(1), 2010: 52(1), 2011: 53(1), 2012: 54(1), 2013: 55(1), 2014: 56(1), 2015: 57(1), 2016: 58(1), 2017: 59(1), 2018: 60(1), 2019: 61(1), 2020: 62(1-2), 2021: 63(1-2), 2022: 64(1-2), 2023: 65(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 2024: 66(2)
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