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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (2); 2 (, 1, 2); 3 (, 1, 2); 4 (, 1, 2); 5 (, 1, 2); 6 (, 1, 2); 7 (, 1, 2); 8 (, 1, 2); 9 (, 1, 2); 10 (, 1, 2); 11 (, 1, 2); 12 (, 1); 13 (, 1); 14 (, 1, 2, 3-4); 15 (, 1-2, 3, 4); 16 (, 1 to 4); 17 (, 1, 2-3, 4); 18 (, 1-2, 3-4); 19 (, 1, 2, 3-4); 20 (, 1, 2, 3-4); 21 (, 1-2); 22 (, 1 to 3); 23 (, 1 to 3); 24 (, 1, 2-3); 25 (, 1 to 3); 26 (, 1-2, 3, 4); 27 (, 1 to 4); 28 (, 1, 2, 3-4); 29 (, 1, 2, 3-4); 30 (, 1-2, 3, 4); 31 (, 1 to 6); 32 (, 1-2, 3 to 6); 33 (, 1 to 6); 34 (, 1 to 6); 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 3); 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; 2020; 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 50
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Portico
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Preserved
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2026-02-12
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Preserved : 1994: 19(2-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1997: 22(1-3), 1998: 23(1-3), 1999: 24(1-3), 2000: 25(1-3), 2001: 26(1-4), 2002: 27(1-4), 2003: 28(1-4), 2004: 29(1-4), 2004/2005: 30(1-4), 2006: 31(1-6), 2007: 32(1-6), 2008: 33(1-6), 2009: 34(1-6), 2010: 35(1-6), 2011: 36(1-6), 2012: 37(1-6), 2013: 38(1-6), 2014: 39(1-6), 2015: 40(2-6), 2016: 41(1-6), 2017: 42(1-6), 2018: 43(1-6), 2019: 44(1-6), 2018/2019/2020: 45(1-6), 2021: 46(1-6), 2022: 47(1-6), 2023: 48(1-6), 2024: 49(1-5), 2025: 50(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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37, 44
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LOCKSS Archive
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Preserved
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2026-02-09
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38 to 43
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Library of Congress
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Preserved
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2025-04-07
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41 (5); 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 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 : 3 (1, 3, 4); 4 (1 to 6); 22 (1 to 3); 23 (1 to 3); 24 (1, 2); 25 (1 to 3); 26 (1, 3, 4); 27 (1 to 4); 28 (1 to 3); 29 (1 to 3); 31 (1 to 6); 32 (1, 3 to 6); 33 (1 to 6); 34 (1 to 6); 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)
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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, 3, 4); 4 (1 to 6); 22 (1 to 3); 23 (1 to 3); 24 (1, 2); 25 (1 to 3); 26 (1, 3, 4); 27 (1 to 4); 28 (1 to 3); 29 (1 to 3); 31 (1 to 6); 32 (1, 3 to 6); 33 (1 to 6); 34 (1 to 6); 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)
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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 : 24 (1, 2); 25 (1-3); 26 (1, 3, 4); 27 (1-4); 28 (1-3); 29 (1-3); 30 (1-2, 3, 4); 31 (1-6); 32 (1, 3-6); 33 (1-6); 34 (1-6); 35 (1-6); 36 (1-6); 37 (1-6); 38 (2-6); 39 (1-6); 40 (1-6); 41 (1-6); 42 (1-6); 43 (1-6); 44 (1-6)
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