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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 11 (1 to 12); 12 (, 1 to 12); 13 (, 1 to 12); 14 (, 1 to 12); 15 (, 1 to 12); 16 (, 1 to 12); 17 (, 1 to 12); 18 (, 1 to 12); 19 (, 1 to 12); 20 (, 1 to 12); 21 (, 1 to 12); 22 (, 1 to 12); 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 12); 32 (, 1 to 12); 33 (, 1, 2, 4, 6, 8 to 12); 34 (, 1 to 12); 35 (, 1 to 12); 36 (, 1 to 12); 37 (, 1 to 12); 38 (, 1 to 12); 39 (, 1 to 7); 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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Internet Archive
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Preserved
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2025-08-08
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1 to 18
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 32
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 40
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Portico
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Preserved
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2026-02-12
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Preserved : 1986/1987: 1(1-4), 1988: 2(1-4), 1989: 3(1-4), 1990: 4(1-4), 1991: 5(1-4), 1992: 6(1-6), 1993: 7(1-6), 1994: 8(1-12), 1995: 9(1-12), 1996: 10(1-12), 1997: 11(1-12), 1998/2014: 12(1-12), 1999: 13(1-12), 2000: 14(1-12), 2001: 15(1, S 1, 2-12), 2002: 16(1-12), 2003: 17(1-12), 2004: 18(1-12), 2005: 19(1-12), 2006: 20(1, S 1, 2, S 2, 3-12), 2007: 21(1, S 1, 2-12), 2008: 22(1, S 1, 2-12), 2009: 23(1, S 1, 2-12), 2010: 24(1, S 1, 2-12), 2011: 25(1, S 1, 2-12), 2012: 26(1, S 1, 2-8, 10-12), 2013: 27(1, S 1, 2-11), 2014: 28(1, S 1, 2-9, 11-12), 2015: 29(S 1, 2, 4-12), 2016: 30(1, S 1, 2-12), 2017: 31(1, S 1, 2, S 2, 3-12), 2018: 32(1, S 1, 2-12), 2019: 33(1, S 1, 2, S 2, 3-12), 2020: 34(1, S 1, 2, S 2, 3-12), 2021: 35(1, S 1, 2-12), 2022: 36(1, S 1, 2, S 2, 3, 5-12), 2023: 37(1, S 1, 2, S 2, 3-12), 2024: 38(1, S 1, 2-12), 2025: 39(S 1, 2, S 2, 4-8, 10-12), 2026: 40(1)
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LOCKSS Archive
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In Progress
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2026-02-09
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33
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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 (Suppl 2, 1 to 9, 11, 12); 3 (Suppl 1, 1 to 9, 11, 12); 11 (1 to 9, 11, 12); 12 (Suppl 1, 1 to 9, 11, 12); 13 (Suppl 1, 1 to 9, 11, 12); 14 (Suppl 1, 1 to 9, 11, 12); 15 (Suppl 1, 1 to 9, 11, 12); 16 (Suppl 1, 1 to 9, 11, 12); 17 (Suppl 1, 1 to 9, 11, 12); 18 (1 to 9, 11, 12); 19 (1 to 9, 11, 12); 21 (Suppl 1, 1 to 9, 11, 12); 22 (Suppl 1, 1 to 9, 11, 12); 23 (Suppl 1, 1 to 9, 11, 12); 24 (Suppl 1, 1 to 9, 11, 12); 25 (Suppl 1, 1 to 9, 11, 12); 26 (Suppl 1, 1 to 9, 11, 12); 27 (Suppl 1, 1 to 9, 11, 12); 28 (Suppl 1, 1 to 9, 11, 12); 29 (Suppl 1, 1 to 9, 11, 12); 31 (Suppl 2, 1 to 9, 11, 12); 32 (Suppl 1, 1 to 9, 11, 12); 33 (Suppl 1, 1 to 9, 11, 12); 34 (Suppl 1, 1 to 9, 11, 12); 35 (Suppl 1, 1 to 9, 11, 12); 36 (Suppl 2, 1 to 9, 11, 12); 37 (Suppl 2, 1 to 9, 11, 12); 38 (Suppl 2, 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 : 2 (Suppl 2, 1 to 9, 11, 12); 3 (Suppl 1, 1 to 9, 11, 12); 11 (1 to 9, 11, 12); 12 (Suppl 1, 1 to 9, 11, 12); 13 (Suppl 1, 1 to 9, 11, 12); 14 (Suppl 1, 1 to 9, 11, 12); 15 (Suppl 1, 1 to 9, 11, 12); 16 (Suppl 1, 1 to 9, 11, 12); 17 (Suppl 1, 1 to 9, 11, 12); 18 (1 to 9, 11, 12); 19 (1 to 9, 11, 12); 21 (Suppl 1, 1 to 9, 11, 12); 22 (Suppl 1, 1 to 9, 11, 12); 23 (Suppl 1, 1 to 9, 11, 12); 24 (Suppl 1, 1 to 9, 11, 12); 25 (Suppl 1, 1 to 9, 11, 12); 26 (Suppl 1, 1 to 9, 11, 12); 27 (Suppl 1, 1 to 9, 11, 12); 28 (Suppl 1, 1 to 9, 11, 12); 29 (Suppl 1, 1 to 9, 11, 12); 31 (Suppl 2, 1 to 9, 11, 12); 32 (Suppl 1, 1 to 9, 11, 12); 33 (Suppl 1, 1 to 9, 11, 12); 34 (Suppl 1, 1 to 9, 11, 12); 35 (Suppl 1, 1 to 9, 11, 12); 36 (Suppl 2, 1 to 9, 11, 12); 37 (Suppl 2, 1 to 9, 11, 12); 38 (Suppl 2, 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 : 10 (9-12); 11 (1-12); 12 (1-12); 13 (1-12); 14 (supplement-1, 1-12); 15 (supplement-1, 1-12); 16 (1-11); 17 (4, 5, 7-12); 18 (1-12); 19 (1-12); 20 (1-12); 21 (1-4, 6-13); 22 (1-12); 23 (supplement-1, 1-12); 24 (supplement-1, 1-12); 25 (supplement-1, 1-12); 26 (supplement-1, 1-12); 27 (supplement-1, 1-12); 28 (supplement-1, 1-12); 29 (supplement-1, 1-12); 30 (supplement-1, 1-12); 31 (supplement-2, 1-12); 32 (supplement-1, 1-12); 33 (supplement-1, 1-12); 181 (3)
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