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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 18 (1); 19 (, 1); 20 (, 1); 2022; 2023; 2024; 2025
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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 : 1 (1); 2; 3; 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 : 1 (1); 2; 3; 4
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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 : 1 (1); 2; 3; 4; 5; 6; 7 (Suppl 1, 1); 8; 9; 11; 12; 13; 14; 15; 16; 17; 18; 19
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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; 5; 6; 7 (Suppl 1, 1); 8; 9; 11; 12; 13; 14; 15; 16; 17; 18; 19
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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 (1-2); 2; 3; 4; 5; 6; 7 (supplement-1, 1-2); 8; 9; 10; 11; 12; 13
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1-2); 2 (, 1-2); 3 (, 1-2); 4 (, 1-2); 5 (, 1-2); 6 (, 1-2); 7 (, 1-2); 8 (, 1-2); 9 (, 1); 10 (, 1); 11 (, 1); 12 (, 1); 13 (, 1); 14 (, 1); 15 (, 1); 16 (, 1); 17 (, 1); 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2021; 2022
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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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1 to 21
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Portico
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Preserved
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2026-02-12
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Preserved : 2006: 1(1-2), 2007: 2(1-2), 2008: 3(1-2), 2009: 4(1-2), 2010: 5(1-2), 2011: 6(1-2), 2012: 7(1-2, S 1), 2013: 8(1-2), 2014: 9(1), 2015: 10(1), 2016: 11(1), 2017: 12(1), 2018: 13(1), 2019: 14(1), 2020: 15(1), 2021: 16(1), 2022: 17(1), 2023: 18(1), 2024: 19(1), 2025: 20(1), 2026: 21(1)
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