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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 4); 2 (1 to 6); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1, 2, 3-4); 7 (1 to 4); 8 (1 to 4); 9 (1, 2, 3-4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 5); 18 (1 to 5); 19 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 5); 26 (1 to 6); 27 (1)
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Library of Congress
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Preserved
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2025-04-07
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12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 5); 18 (1 to 5); 19 (1 to 6); 20 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 6); 26 (1 to 6); 27 (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 : 1 (1-3); 2 (1-4); 3 (1-3); 4 (1-4); 5 (1-4); 6 (1, 2); 7 (1, 3); 8 (1, 2, 4); 9 (1, 2, 3-4); 10 (1-4)
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1 to 3); 2 (, 1 to 4); 3 (, 1 to 4); 4 (, 1 to 4); 5 (, 1 to 4); 6 (, 1, 2, 3-4); 7 (, 1 to 4); 8 (, 2 to 4); 9 (, 1, 2, 3-4); 10 (, 1 to 4); 11 (, 1 to 4); 12 (, 1 to 4); 13 (, 1 to 4); 14 (, 1 to 4); 15 (, 1 to 4); 16 (, 1 to 4); 17 (, 1 to 5); 18 (, 1 to 5); 19 (, 1 to 5); 20 (, 1 to 6); 21 (, 1 to 6); 22 (, 1 to 6); 23 (, 1 to 6); 24 (, 1 to 6); 25 (, 1 to 6); 26 (, 1 to 6); 27 (, 1 to 4); 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 26
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CLOCKSS Archive
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Preserved
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2026-02-09
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ahead-of-print to 27
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LOCKSS Archive
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In Progress
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2026-02-09
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27
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 4
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Portico
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Preserved
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2026-02-12
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Preserved : 1999: 1(1-3), 2000: 2(1-4), 2001: 3(1-4), 2002: 4(1-4)
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.1:1-3;vol.2:1-4;vol.3:1-4;vol.4:1-4
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Portico
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Preserved
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2026-02-12
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Preserved : 2001: 3(1-4), 2002: 4(1-4), 2003: 5(1-4), 2004: 6(1-4), 2005: 7(1-4), 2006: 8(1-4), 2007: 9(1-2), 2008: 10(1-4), 2009: 11(1-4), 2010: 12(1-4), 2011: 13(1-4), 2012: 14(1-4), 2013: 15(1-4), 2014: 16(1-4), 2015: 17(1-5), 2016: 18(1-5), 2017: 19(1-6), 2018: 20(1-6), 2019: 21(1-6), 2020: 22(1-6), 2021: 23(1-6), 2022: 24(1-6), 2023: 25(1-6), 2024: 26(1-6), 2025: 27(1-6), 2026: 28(1)
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