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Portico
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Preserved
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2026-04-23
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Preserved : 1997: 3(1-2), 1998: 4(1-2), 1999: 5(1-2, 4), 2000: 6(1-2), 2001: 7(1-2), 2002: 8(1-2), 2003: 9(1-2), 2004: 10(1-6), 2005: 11(1-6), 2006: 12(1-5, 8), 2007: 13(1-8), 2008: 14(1-8), 2009: 15(1-4, 7-8), 2010: 16(1-8), 2011: 17(1-10), 2012: 18(1-10), 2013: 19(1-10), 2014: 20(1-12), 2015: 21(1-15), 2016: 22(1-15), 2017: 23(1-15), 2018: 24(1-18), 2019: 25(1-18), 2020: 26(1-18), 2021: 27(1-18), 2022: 28(1-18), 2023: 29(1-18), 2024: 30(1-18), 2025: 31(1-18), 2026: 32(1-6)
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LOCKSS Archive
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Preserved
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2026-04-13
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1 to 30
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CLOCKSS Archive
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Preserved
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2026-04-13
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ahead-of-print to 31
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LOCKSS Archive
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In Progress
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2026-04-13
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31, 32
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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 to 6); 2 (1 to 6, 7-9, 11, 12); 3 (1 to 9, 11 to 18); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 6); 11 (1 to 6); 12 (1 to 5, 6-7, 8); 13 (1 to 8); 14 (1 to 8); 15 (1 to 4, 5-6, 7-8); 16 (1 to 8); 17 (1 to 4, 5-6, 7, 8, 9-1); 18 (1, 2, 3-4, 5 to 9); 19 (1 to 6, 7-8, 9); 21 (1 to 9, 12, 13-14, 15); 22 (1 to 3, 4-6, 7, 8-9, 11 to 15); 23 (1 to 6, 7-9, 11 to 15); 24 (1 to 6, 7-8, 9, 11 to 18); 25 (1 to 9, 11 to 18); 26 (1, 2-3, 4-5, 6, 7-8, 9, 11 to 18); 27 (1-2, 3, 4-5, 6 to 9, 11 to 18); 28 (1 to 3, 4-5, 6 to 9, 11, 12, 13-15, 16 to 18); 29 (1 to 9, 11 to 18); 31 (1 to 3)
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Library of Congress
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Preserved
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2025-04-07
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16 (1 to 8); 17 (1 to 5-6, 7 to 9-10); 18 (1 to 3-4, 5 to 10); 19 (1 to 7-8, 9, 10); 20 (1 to 7-9, 10 to 12); 21 (1 to 10-11, 12, 13-14, 15); 22 (1 to 4-6, 7, 8-9, 10 to 15); 23 (1 to 7-9, 10 to 15); 24 (1 to 7-8, 9 to 18); 25 (1 to 18); 26 (1, 2-3, 4-5, 6, 7-8, 9 to 18); 27 (1-2, 3, 4-5, 6 to 18); 28 (1 to 4-5, 6 to 13-15, 16 to 18); 29 (1 to 18); 30 (1 to 18)
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