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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 (, 1-2, 3-4); 3 (, 1); 4 (, 1, 2); 5 (, 1); 6 (, 1); 7 (, 1, 2); 8 (, 1 to 3); 9 (, 1 to 3); 10 (, 1, 3); 11 (, 1, 2); 12 (, 1 to 3); 13 (, 1, 2-3); 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 13
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CLOCKSS Archive
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Preserved
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2026-02-09
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2 to 11
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Portico
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Preserved
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2026-02-12
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Preserved : 2007: 1(1), 2008: 2(1-4), 2009: 3(1), 2010: 4(1-2), 2011: 5(1), 2012: 6(1), 2013: 7(1-2), 2014: 8(1-3), 2015: 9(1-3), 2016: 10(1-3), 2017: 11(1-3), 2018: 12(1-3), 2019: 13(1-3)
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CLOCKSS Archive
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Preserved
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2026-02-09
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1, 2, 7 to 9, 11 to 13
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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 (2, 3); 2 (1-2, 3-4); 3 (1); 4 (2); 5 (1); 6; 7 (2); 8 (1 to 3); 9 (1 to 3); 11 (1 to 3); 12 (1 to 3); 13 (1, 2-3)
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Library of Congress
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Preserved
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2025-04-07
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4 (1, 2); 5 (1); 6 (1); 7 (1, 2); 8 (1 to 3); 9 (1 to 3); 10 (1 to 3); 11 (1 to 3); 12 (1 to 3); 13 (1, 2-3)
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