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CLOCKSS Archive
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Preserved
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2026-04-13
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13 to 24
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Portico
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Preserved
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2026-04-23
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Preserved : 2006: 13(1-6), 2007: 14(1-6), 2008: 15(1-6), 2009: 16(1-6), 2010: 17(1-12), 2011: 18(1-12), 2012: 19(1-12), 2013: 20(1-12), 2014: 21(1, S 1, 2-12), 2015: 22(1, S 1, 2-12), 2016: 23(1-11), 2017: 24(1-12)
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 13 (Supplement, 1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 12); 18 (1 to 12); 19 (1, 2, 4 to 12); 20 (2 to 9, 11, 12); 21 (Supplement, 1 to 10, 12); 22 (Supplement, 1 to 12); 23 (1, 9); 24 (2 to 6, 9 to 12); 26 (7 to 12); 27 (1 to 12); 28 (1 to 12); 29 (1 to 12); 30 (1 to 12); 31 (1, 2, 4 to 12); 32 (1 to 12); 33 (1 to 4)
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LOCKSS Archive
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In Progress
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2026-04-13
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13 to 27
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CLOCKSS Archive
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Preserved
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2026-04-13
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13 to 33
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Portico
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Preserved
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2026-04-23
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Preserved : 2006: 13(1-6), 2007: 14(1-6), 2008: 15(1-6), 2009: 16(1-6), 2010: 17(1-12), 2011: 18(1-12), 2012: 19(1-12), 2013: 20(1-12), 2014: 21(1-12), 2015: 22(1-12), 2016: 23(1-12), 2017: 24(1-12), 2018: 25(1-12), 2019: 26(1-12), 2019/2020: 27(1-12), 2021: 28(1-12), 2022: 29(1-12), 2023: 30(2-12), 2024: 31(1-10, 12), 2025: 32(1, 4-12), 2026: 33(1-5)
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Library of Congress
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Preserved
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2025-04-07
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23 (1 to 12); 24 (1 to 12); 25 (1 to 12); 26 (1 to 12); 27 (1 to 12); 28 (1 to 12); 29 (1 to 12); 30 (1 to 12); 31 (1 to 9, 12)
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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 : 3 (1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (1 to 9, 11, 12)
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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 : 3 (1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (1 to 9, 11, 12)
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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 : 13 (S1, 1-6); 14 (1-6); 15 (1-6); 16 (1-6); 17 (1-12); 18 (1-12); 19 (1-12); 20 (1-12); 21 (S1, 1-12); 22 (S1, 1-12); 23 (1-12); 24 (1-12); 25 (1-12); 26 (1-3, 5-11)
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