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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1 to 4); 2 (, 1 to 4); 3 (, 1 to 4); 4 (, 1 to 4); 5 (, 1); 6 (, 1); 7 (, 1); 8 (, 1, 2, 3-4); 9 (, 1 to 4); 10 (, 1 to 4); 11 (, 1 to 4); 12 (, 1 to 4); 13 (, 1, 2, 3-4); 14 (, 1 to 4); 15 (, 1 to 4); 16 (, 1 to 4); 17 (, 1 to 4); 18 (, 1 to 4); 19 (, 1 to 4); 20 (, 1 to 4); 21 (, 1 to 4); 22 (, 1 to 4); 23 (, 1/2, 3, 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); 30 (, 1 to 4); 31 (, 1 to 4); 32 (, 1, 2-3); 33 (, 1 to 3); 34 (, 1 to 3); 35 (, 1 to 3); 36 (, 1 to 3); 37 (, 1 to 3); 38 (, 1 to 3); 39 (, 1 to 3); 40 (, 1 to 3); 41 (, 1 to 3); 42 (, 1 to 3); 43 (, 1 to 3); 44 (, 1 to 3); 45 (, 1 to 3); 46 (, 1 to 4); 47 (, 1 to 4); 48 (, 1 to 4); 49 (, 1 to 4); 50 (, 1 to 4); 51 (, 1 to 4); 52 (, 1 to 4); 53 (, 1 to 4); 54 (, 1 to 4); 55 (, 1 to 4); 56 (, 3); 57 (, 3 to 6); 58 (, 1 to 6); 59 (, 1 to 6); 60 (, 1 to 6); 61 (, 1 to 6); 62 (, 1 to 6); 63 (, 1 to 6); 64 (, 1 to 6); 65 (, 1 to 6); 66 (, 2, 3, 5, 6); 67 (, 1 to 6); 68 (, 1 to 6); 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 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; 2021; 2022; 2023; 2024; 2025
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 70
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Portico
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Preserved
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2026-02-12
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Preserved : 1985: 10(4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1994: 19(4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1997: 22(1-4), 1998: 23(1-4), 1999: 24(1-4), 2000: 25(1-4), 2001: 26(1-4), 2002: 27(1-4), 2003: 28(1-4), 2004: 29(1-4), 2005/2006: 30(1-4), 2006: 31(1-4), 2007: 32(1-3), 2007: 33(1-3), 2008: 34(1-3), 2008: 35(1-3), 2009: 36(1-3), 2009: 37(1-3), 2010: 38(1-3), 2010: 39(1-3), 2011: 40(1-3), 2011: 41(1-3), 2012: 42(1-3), 2012: 43(1, 3), 2013: 44(1-3), 2013: 45(1-3), 2014: 46(1-4), 2014: 47(1-4), 2015: 48(2-4), 2015: 49(1-4), 2016: 50(1-4), 2016: 51(1-4), 2017: 52(1-4), 2017: 53(1-4), 2018: 54(1-4), 2018: 55(1-4), 2019: 56(1-6), 2019: 57(1-6), 2018/2019: 58(1-6), 2019/2020: 59(1-6), 2021: 60(1-6), 2021: 61(1-6), 2022: 62(1-6), 2022: 63(1-6), 2023: 64(2-6), 2023: 65(1-6), 2024: 66(1-6), 2024: 67(1-6), 2025: 68(1-6), 2025: 69(1-6), 2026: 70(1-2)
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LOCKSS Archive
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In Progress
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2026-02-09
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42, 43, 56
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LOCKSS Archive
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Preserved
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2026-02-09
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44 to 55
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Library of Congress
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Preserved
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2025-04-07
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54 (2 to 4); 55 (1 to 4); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6); 60 (1 to 6); 61 (1 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 5)
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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 : 3 (1 to 4); 4 (1 to 3); 5 (1 to 4); 6 (1 to 6); 22 (1 to 4); 23 (1, 3, 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, 2); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1 to 3); 39 (1 to 3); 41 (1 to 3); 42 (1 to 3); 43 (1 to 3); 44 (1 to 3); 45 (1 to 3); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6); 61 (1 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (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 : 3 (1 to 4); 4 (1 to 3); 5 (1 to 4); 6 (1 to 6); 22 (1 to 4); 23 (1, 3, 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, 2); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1 to 3); 39 (1 to 3); 41 (1 to 3); 42 (1 to 3); 43 (1 to 3); 44 (1 to 3); 45 (1 to 3); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6); 61 (1 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (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 : 23 (1-2, 3, 4); 24 (1-4); 25 (1-4); 26 (1-4); 27 (1-4); 28 (1-4); 29 (1-4); 30 (1-4); 31 (2, 4); 32 (2-3); 33 (1-3); 34 (1-3); 35 (1-3); 36 (1-3); 37 (1-3); 38 (1-3); 39 (1-3); 40 (1-3); 41 (1-3); 42 (1-3); 43 (1-3); 44 (1-3); 45 (1-3); 46 (1-4); 47 (1-4); 48 (1-4); 49 (1-4); 50 (1-4); 51 (1-4); 52 (1-4); 53 (1-4); 54 (1-4); 55 (1-4); 56 (1-6); 57 (1-6)
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