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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 13 (2 to 4); 18; 19 (1 to 4); 20 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 3); 27 (1 to 4); 28 (1 to 4); 29 (1, 2); 30 (3, 4); 31 (1, 2); 32 (1, 3); 33 (1, 4); 34 (2 to 4); 35 (1 to 4); 36 (2, 3); 37 (4); 38 (1 to 4)
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Internet Archive
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Preserved
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2025-08-08
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1 to 9
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Portico
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Preserved
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2026-04-16
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Preserved : 1990: 3(1, 4), 1991: 4(1-4), 1992: 5(1-4), 1993: 6(1-4), 1994: 7(1-4), 1995: 8(1-4), 1996: 9(1-4), 1997: 10(1-4), 1998: 11(1-4), 1999: 12(1-4), 2000: 13(1-4), 2001: 14(1-4), 2002: 15(1-4), 2003: 16(1-4), 2004: 17(1-4), 2005: 18(1-4), 2006: 19(1-4), 2007: 20(1-4), 2008: 21(1-4), 2009: 22(1-4), 2010: 23(1-4), 2011: 24(1-4), 2012: 25(1-4), 2012/2013: 26(1-4), 2014: 27(1-4), 2015: 28(1-4), 2016: 29(1-4), 2017: 30(1-4), 2018: 31(1-4), 2019: 32(1-4), 2020: 33(1-4), 2021: 34(1-4), 2022: 35(1-4), 2023: 36(1-4), 2024: 37(1-4), 2025: 38(1-4)
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LOCKSS Archive
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Preserved
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2026-04-13
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18 to 38
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CLOCKSS Archive
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Preserved
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2026-04-13
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21 to 31, 38
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CLOCKSS Archive
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In Progress
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2026-04-13
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32 to 38
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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 4); 3 (1 to 4); 19 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (2 to 4); 37 (1, 3, 4)
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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 4); 3 (1 to 4); 19 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (2 to 4); 37 (1, 3, 4); 38 (1)
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British Library
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Preserved
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2019-09-18
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Preserved : 13 (3), 27 (1 to 2; 4), 28 (1 to 4), 29 (1 to 3), 31 (1 to 2)
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