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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (1, 2); 2 (1, 2); 3 (1, 2); 4 (1, 2); 5 (1, 2); 6 (1/2); 7 (2); 8 (1/2); 9 (2); 10 (1, 2); 11 (1, 2); 12 (1, 2); 13 (1, 2); 14 (1 to 3); 15 (1 to 3); 16 (1 to 3); 17 (1 to 3); 18 (1, 2/3); 19 (1, 2, 3/4); 20 (1, 2, 3/4); 21 (1, 2, 3/4); 22 (1/2, 3, 4); 23 (1 to 4); 24 (1, 2, 3/4); 25 (1, 2, 3/4); 26 (1/2, 3/4); 27 (1, 2/4); 28 (1, 2, 3/4); 29 (1, 2, 3-4); 30 (1-2, 3-4); 31 (1-2, 3-4); 32 (1, 2-4); 33 (1-2, 3-4); 34 (1-3, 4); 35 (1-2, 3-4); 36 (1-2, 3-4); 37 (1-2, 3-4); 38 (1, 3); 39 (1-2, 3-4)
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LOCKSS Archive
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In Progress
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2026-03-30
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Portico
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Preserved
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2026-04-02
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Preserved : 1986: 1(1-2), 1987: 2(1-2), 1988: 3(1-2), 1989/1990: 4(1-2), 1991: 5(1-2), 1992: 6(1-2), 1993: 7(1-2), 1994: 8(1-2), 1995: 9(1-2), 1996: 10(1-2)
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CLOCKSS Archive
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Preserved
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2026-03-30
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1 to 39
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Portico
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Preserved
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2026-04-02
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Preserved : 2008: 22(4), 2009: 23(1-4), 2010: 24(1-4), 2011: 25(1-4), 2012: 26(1-4), 2013: 27(1-4), 2014: 28(1-4), 2015: 29(1-4), 2016: 30(1-4), 2017/2018: 31(1-4), 2018/2019: 32(1-4), 2020: 33(1-4), 2021: 34(1-4), 2021: 35(1-4), 2022: 36(1-4), 2023/2024: 37(1-4), 2024: 38(3), 2025: 39(1-4)
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Library of Congress
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Preserved
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2025-04-07
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31 (3-4); 32 (1, 2-4); 33 (1-2, 3-4); 34 (1-3, 4); 35 (1-2, 3-4); 36 (1-2, 3-4); 37 (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 : 2 (1 to 3); 3 (1); 11 (2); 12 (1, 2); 13 (1, 2); 14 (1 to 3); 15 (1 to 3); 16 (1 to 3); 17 (1 to 3); 18 (1, 2); 19 (1 to 3); 21 (1 to 3); 22 (1, 3, 4); 23 (1 to 4); 24 (1 to 3); 25 (1 to 3); 26 (1, 3); 27 (1, 2); 28 (1 to 3); 29 (1 to 3); 31 (1, 3-4); 32 (1, 2-4); 33 (1-2, 3-4); 34 (1-3, 4); 35 (1-2, 3-4); 36 (1-2, 3-4); 37 (1-2, 3); 38 (1)
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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 : 2 (1 to 3); 3 (1); 11 (2); 12 (1, 2); 13 (1, 2); 14 (1 to 3); 15 (1 to 3); 16 (1 to 3); 17 (1 to 3); 18 (1, 2); 19 (1 to 3); 21 (1 to 3); 22 (1, 3, 4); 23 (1 to 4); 24 (1 to 3); 25 (1 to 3); 26 (1, 3); 27 (1, 2); 28 (1 to 3); 29 (1 to 3); 31 (1, 3-4); 32 (1, 2-4); 33 (1-2, 3-4); 34 (1-3, 4); 35 (1-2, 3-4); 36 (1-2, 3-4); 37 (1-2, 3); 38 (1)
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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 : 15 (1-3); 16 (1-3); 17 (1-3); 18 (1, 2); 19 (1, 2, 3-4); 20 (1, 2, 3-4); 21 (2, 3-4); 22 (1-2, 3, 4); 23 (1-4); 24 (1, 2, 3-4); 25 (1, 2, 3-4); 26 (1-2, 3-4); 27 (1, 2-4); 28 (1, 2, 3-4); 29 (1, 2, 3-4); 30 (1-2, 3-4); 31 (1, 3-4); 32 (1)
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