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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 to 6); 2 (1 to 6); 3 (1 to 6); 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 7 (1 to 6); 8 (1 to 6); 9 (1 to 6); 10 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (1 to 5); 17 (4 to 6); 18 (1 to 6); 19 (1 to 6); 20 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 5); 24 (1 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 8); 28 (1 to 7); 29 (1, 4); 30 (1, 2, 4, 6 to 8); 31 (2 to 8); 32 (1 to 8); 33 (1 to 4, 6, 7); 34 (8); 35 (1, 6 to 8); 36 (1 to 3)
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Portico
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Preserved
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2026-04-02
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Preserved : 1990/1991: 1(1-6), 1992: 2(1-6), 1993: 3(1-6), 1994: 4(1-4, 6), 1995: 5(1-6), 1996: 6(1-6), 1997: 7(1-5), 1998: 8(1-4, 6), 1999: 9(1-2, 5), 2000: 10(2, 5-6), 2001: 11(1-3, 5-6), 2002: 12(1-6), 2003: 13(1-6), 2004: 14(1-6), 2005: 15(1-6), 2006: 16(1-4, 6), 2007: 17(1, 3, 5), 2008: 18(1-6), 2008/2009: 19(1-6), 2008/2009/2010: 20(1-6), 2009/2010: 21(1-6), 2010/2011/2012: 22(1-6), 2011/2012/2013: 23(1-6), 2012/2014: 24(1-6), 2012/2015: 25(1-6), 2016: 26(1-6), 2017: 27(1-8), 2018: 28(1-8), 2019: 29(1-8), 2020: 30(1-8), 2021: 31(1-8), 2022: 32(1-8), 2023: 33(1-8), 2024: 34(1-8), 2025: 35(1-8), 2026: 36(1-3)
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LOCKSS Archive
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Preserved
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2026-04-06
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16 to 34
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CLOCKSS Archive
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Preserved
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2026-04-06
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18 to 28
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CLOCKSS Archive
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In Progress
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2026-04-06
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29 to 35
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LOCKSS Archive
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In Progress
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2026-04-06
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35, 36
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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 6); 3 (1 to 8); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 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 8); 28 (1 to 8); 29 (1 to 8); 31 (1 to 8); 32 (1 to 8); 33 (1, 2, 5 to 8); 34 (1, 2, 5, 6, 8); 35 (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 : ; 2 (1 to 6); 3 (1 to 8); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 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 8); 28 (1 to 8); 29 (1 to 8); 31 (1 to 8); 32 (1 to 8); 33 (1, 2, 5 to 8); 34 (1, 2, 5, 6, 8); 35 (1 to 7)
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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 : 29 (8)
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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 : 1 (3-6); 2 (2, 5, 6); 3 (1-6); 4 (2-6); 5 (2-6)
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British Library
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Preserved
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2019-09-18
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Preserved : 24 (1 to 3; 6), 25 (1 to 6), 26 (1; 3 to 5), 27 (1 to 6), 28 (2; 4 to 7)
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