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CLOCKSS Archive
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Preserved
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2026-06-08
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1 to 15
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LOCKSS Archive
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In Progress
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2026-06-08
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1 to 5
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CLOCKSS Archive
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In Progress
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2026-06-08
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1 to 14
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Portico
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Preserved
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2026-06-11
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Preserved : 2006: 1(1-4), 2006: 2(1-4), 2007: 3(1-4), 2008: 4(1-4), 2009: 5(1-4), 2010: 6(1-4), 2011: 7(1-4), 2012: 8(1-4), 2014: 9(1), 2016: 10(1), 2019: 11(1), 2020: 12(1), 2022: 13(1), 2023: 14(1), 2024: 15(1)
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LOCKSS Archive
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Preserved
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2026-06-08
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6 to 14
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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 : 1 (1, 2, 3-4); 2 (1-4); 3 (3-4); 4 (1, 2-4); 5 (1-4); 6 (4); 7 (1, 2-3, 4); 8 (1-2, 3-4); 9 (1); 11; 12; 13
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