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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 21 (1 to 12); 27 (, 1 to 4); 28 (, 1 to 4); 29 (, 1 to 4); 30 (, 1 to 4); 31 (, 1 to 4); 32 (, 1 to 4); 33 (, 1 to 4); 34 (, 1 to 4); 35 (, 1 to 6); 36 (, 1 to 6); 37 (, 1 to 6); 38 (, 1 to 6); 39 (, 1 to 6); 40 (, 1 to 6); 41 (, 1 to 6); 42 (, 1 to 6); 43 (, 1 to 6); 44 (, 1 to 6); 45 (, 1 to 6); 46 (, 1 to 6); 47 (, 1 to 6); 48 (, 1 to 6); 49 (, 1 to 6); 50 (, 1 to 6); 51 (, 1 to 6); 52 (, 1 to 6); 53 (, 1 to 6); 54 (, 1 to 6); 55 (, 1 to 6); 56 (, 1 to 6); 57 (, 1 to 6); 58 (, 1 to 6); 59 (, 1 to 6); 60 (, 1 to 6); 61 (, 1, 2); 1985; 1991; 1992; 1993; 1994; 1995; 1996; 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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38 to 42
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Portico
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Preserved
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2026-02-12
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Preserved : 2003: 39(5-6), 2004: 40(1-6), 2005: 41(1-6), 2006: 42(1-6), 2007: 43(1-6), 2007/2008: 44(1-6)
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LOCKSS Archive
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Preserved
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2026-02-09
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39 to 44
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Portico
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Preserved
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2026-02-12
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Preserved : 1985: 21(1-12)
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Portico
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Preserved
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2026-02-12
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Preserved : 1991: 27(1-4), 1992: 28(1-4), 1993: 29(1-4), 1994: 30(1-4), 1995: 31(1-4), 1996: 32(1-4), 1997: 33(1-4), 1998: 34(1-4), 1999: 35(1-6), 2000: 36(1-6), 2001: 37(1-6), 2002: 38(1-6), 2003: 39(1-6), 2004: 40(1-6), 2005: 41(1-6), 2006: 42(1-6), 2007: 43(1-6), 2008: 44(1-6), 2009: 45(1-6), 2010: 46(1-6), 2011: 47(1-6), 2012: 48(1-6), 2013: 49(1-6), 2014: 50(1-5), 2015: 51(1-6), 2016: 52(1-6), 2017: 53(1-6), 2018: 54(1, S 1, 2-6), 2019: 55(1-6), 2019/2020: 56(1-6), 2021: 57(1-6), 2022: 58(1-6), 2023: 59(1-6), 2024: 60(1-6), 2025: 61(1-6)
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LOCKSS Archive
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In Progress
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2026-02-09
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48, 55
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LOCKSS Archive
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Preserved
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2026-02-09
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49 to 54
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Library of Congress
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Preserved
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2025-04-07
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54 (S1, 2 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6); 60 (1 to 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 : 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 33 (1 to 4); 34 (1 to 4); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (Suppl 1, 1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (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 : 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 33 (1 to 4); 34 (1 to 4); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (Suppl 1, 1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (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 : 19 (3); 33 (1-4); 35 (1-6); 36 (1-6); 37 (1-6); 38 (1, 3, 4, 6); 39 (1, 3-5); 40 (1-6); 41 (2, 3, 5, 6); 42 (1-6); 43 (1-6); 44 (1-6); 45 (1-6); 46 (1-6); 47 (1-6); 48 (1-6); 49 (1-6); 50 (1-6); 51 (1-6); 52 (1-6); 53 (1-6); 54 (supplement-1, 1-6); 55 (1-5)
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