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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 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 to 4); 24 (, 1 to 4); 25 (, 1 to 4); 26 (, 1 to 4); 27 (, 1, 2-3, 4); 28 (, 1 to 4); 29 (, 1 to 4); 30 (, 1 to 4); 31 (, 1 to 4); 32 (, 1 to 4); 36 (, 3); 37 (, 5, 6); 38 (, 1 to 6); 39 (, 1 to 6); 40 (, 1, 2, 4 to 6); 41 (, 1 to 6); 42 (, 1 to 6); 43 (, 1 to 6); 44 (, 1, 3 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 4, 5-6); 52 (, 1-2, 3, 4-5, 6); 53 (, 1 to 3); 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 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 34
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LOCKSS Archive
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Preserved
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2026-02-09
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15 to 52
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CLOCKSS Archive
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Preserved
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2026-02-09
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15 to 53
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LOCKSS Archive
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In Progress
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2026-02-09
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53
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Portico
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Preserved
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2026-02-12
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Preserved : 1997: 25(1-4), 1998: 26(1-4), 1999: 27(1-4), 2000: 28(1-4), 2001: 29(1-4), 2002: 30(1-4), 2003: 31(1-4), 2004: 32(1-4), 2005: 33(1-4), 2006: 34(1-4), 2007: 35(1-5), 2008: 36(1-5), 2009: 37(1-6), 2010: 38(1-6), 2011: 39(1-6), 2012: 40(1-6), 2013: 41(1-6), 2014: 42(1-6), 2015: 43(1-6), 2016: 44(1-6), 2017: 45(1-6), 2018: 46(1-6), 2019: 47(1-6), 2020: 48(1-6), 2021: 49(1-6), 2022: 50(1-6), 2023: 51(1-6), 2024: 52(1-3, 6), 2025: 53(1-6)
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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 (2 to 4); 4 (1 to 6); 5 (1 to 6); 25 (1 to 4); 26 (1 to 4); 27 (1, 2-3, 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, 2-3, 4, 5); 36 (1 to 5); 37 (1, 2, 3-4, 5, 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 4, 5-6); 52 (1-2, 3, 4-5, 6); 53 (1, 3)
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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 : 1 (1-4); 2 (1-4); 3 (1-4); 4 (1-2, 3, 4); 5 (1-2, 3, 4); 6 (1, 2-3, 4); 7 (1, 2-4); 8 (1-4); 9 (1, 2, 3-4); 10 (1-2, 3, 4); 11 (1-2, 3, 4); 12 (1, 2-3, 4); 13 (1, 2, 3-4); 14 (1-2, 3, 4); 15 (1-4); 16 (1-4); 17 (1-4); 18 (1-4); 19 (1-4); 20 (1-4); 21 (1-4); 22 (1-4); 23 (1-4); 24 (1-4); 25 (1-4); 26 (1-4); 27 (1, 2-3, 4); 28 (1-4); 29 (1-4); 30 (1-4); 31 (1-4); 32 (1, 2, 4); 33 (1, 2, 4); 34 (1-4); 35 (1, 2-3, 4, 5); 36 (1-5)
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Library of Congress
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Preserved
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2025-04-07
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45 (2 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 5-6); 52 (1-2, 3, 4-5)
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