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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 09 (1 to 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 4); 18 (1 to 4); 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 to 6); 28 (1 to 6); 29 (1 to 6); 30 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1)
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Internet Archive
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Preserved
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2025-08-08
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1 to 19
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 38
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Portico
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Preserved
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2026-04-09
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Preserved : 1992: 4(1)
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Portico
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Preserved
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2026-04-09
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Preserved : 1993: 5(3)
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Portico
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Preserved
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2026-04-09
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Preserved : 1995: 7(4), 1996: 8(3), 1997: 9(1)
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Portico
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Preserved
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2026-04-09
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Preserved : 2003: 15(4), 2004: 16(1)
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Portico
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Preserved
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2026-04-09
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Preserved : 2006: 18(1-2), 2007: 19(3, 5-6), 2008: 20(1-4, 6), 2009: 21(1-6), 2010: 22(1-6), 2011: 23(1-6), 2012: 24(2-3, 5-6), 2013: 25(1-5), 2014: 26(1-6), 2015: 27(2-6), 2016: 28(1-6), 2017: 29(1-6), 2018: 30(1-6), 2019: 31(1-6), 2019/2020: 32(1-6), 2021: 33(1-6), 2022: 34(1-6), 2023: 35(1-6), 2024: 36(1-6), 2025: 37(1, 3-6), 2026: 38(1)
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LOCKSS Archive
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In Progress
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2026-04-06
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24, 31
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LOCKSS Archive
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Preserved
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2026-04-06
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25 to 30
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Library of Congress
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Preserved
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2025-04-07
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30 (2 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 5)
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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 4); 2 (1 to 6); 3 (1 to 6); 9 (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 4); 18 (1 to 4); 19 (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 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6)
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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 6); 9 (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 4); 18 (1 to 4); 19 (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 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6)
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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 : 09 (1-4); 9 (1-4); 10 (1-4); 11 (1-4); 12 (1-4); 13 (1-4); 14 (1-4); 15 (1-4); 16 (1-4); 17 (1-4); 18 (1-4); 19 (1-6); 20 (1-6); 21 (1-6); 22 (1-6); 23 (1, 3-6); 24 (1-6); 25 (1, 3-6); 26 (1-6); 27 (1-6); 28 (1, 2, 4-6); 29 (1-6); 30 (1-6); 31 (1-3, 5, 6)
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