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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 2 (1 to 12); 3 (1 to 12); 4 (1 to 12); 5 (Supplement, 1 to 12); 6 (1 to 3, 9 to 12); 7 (1 to 4); 9 (2 to 4, 6 to 12); 10 (1 to 12); 11 (1 to 10); 12 (1 to 12); 13 (1 to 9); 14 (2, 3, 5, 6, 11); 15 (1 to 6, 8, 10 to 12); 16 (1 to 3, 4-5, 6 to 12); 17 (1 to 12); 18 (1 to 8, 10); 19 (11, 12); 20 (1, 2, 9 to 12); 21 (1 to 3)
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LOCKSS Archive
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Preserved
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2026-04-13
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1 to 20
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CLOCKSS Archive
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Preserved
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2026-04-13
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3 to 13, 21
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CLOCKSS Archive
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In Progress
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2026-04-13
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14 to 20
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LOCKSS Archive
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In Progress
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2026-04-13
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21
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Portico
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Preserved
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2026-04-23
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Preserved : 2006: 1(10)
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Portico
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Preserved
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2026-04-23
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Preserved : 2008: 3(1-12), 2008/2009: 4(1-12), 2009/2010: 5(1-12), 2010/2011: 6(1-12), 2012: 7(1-12), 2013: 8(1-12), 2014: 9(1-12), 2014/2015: 10(1-12), 2016: 11(1-12), 2016/2017: 12(1-12), 2018: 13(1-12), 2019: 14(1-12), 2020: 15(1-12), 2021: 16(1-12), 2022: 17(1-12), 2023: 18(1-12), 2024: 19(1-12), 2025: 20(1-12), 2026: 21(1-3)
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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 to 9, 11, 12); 2 (1 to 9, 11, 12); 3 (1 to 9, 11, 12); 4 (1 to 9, 11, 12); 5 (suppl_1, 1 to 9, 11, 12); 6 (1 to 9, 11, 12); 7 (1 to 9, 11, 12); 8 (1 to 9, 11, 12); 9 (1 to 9, 11, 12); 11 (1 to 9, 11, 12); 12 (1 to 9, 11, 12); 13 (1 to 9, 11, 12); 14 (1 to 9, 11, 12); 15 (1 to 9, 11, 12); 16 (1 to 3, 4-5, 6 to 9, 11, 12); 17 (1 to 9, 11, 12); 18 (1 to 9, 11, 12); 19 (1 to 5, 7 to 9)
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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 9, 11, 12); 2 (1 to 9, 11, 12); 3 (1 to 9, 11, 12); 4 (1 to 9, 11, 12); 5 (suppl_1, 1 to 9, 11, 12); 6 (1 to 9, 11, 12); 7 (1 to 9, 11, 12); 8 (1 to 9, 11, 12); 9 (1 to 9, 11, 12); 11 (1 to 9, 11, 12); 12 (1 to 9, 11, 12); 13 (1 to 9, 11, 12); 14 (1 to 9, 11, 12); 15 (1 to 9, 11, 12); 16 (1 to 3, 4-5, 6 to 9, 11, 12); 17 (1 to 9, 11, 12); 18 (1 to 9, 11, 12); 19 (1 to 5, 7 to 9)
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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 : 14 (11)
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British Library
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Preserved
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2019-09-18
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Preserved : 9 (1 to 9; 11 to 12), 10 (1 to 10; 12), 11 (1 to 10), 12 (2; 5; 10), 13 (5 to 9), 14 (2 to 3; 5)
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