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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); 2 (, 1); 3 (, 1); 4 (, 1); 5 (, 1); 6 (, 1); 7 (, 1); 8 (, 1); 9 (, 1); 10 (, 1); 15 (, 1); 16 (, 1); 17 (, 1); 18 (, 1); 20 (, 1); 22 (, 1); 23 (, 1); 24 (, 1); 25 (, 1); 26 (, 1); 27 (, 1); 28 (, 1); 29 (, 1); 30 (, 1); 31 (, 1); 32 (, 1); 33 (, 1); 37 (, 1, 4); 38 (, 1 to 4); 39 (, 1 to 4); 40 (, 1, 3, 4); 41 (, 1 to 4); 42 (, 1 to 4); 43 (, 1, 3-4); 44 (, 1-2, 3, 4); 45 (, 1-2, 3, 4); 46 (, 1 to 3); 47 (, 1 to 4); 48 (, 1, 2-3, 4); 49 (, 1-2, 3-4); 50 (, 1, 2-3, 4); 51 (, 1, 2-3, 4); 52 (, 1, 2-3, 4); 53 (, 1); 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1986; 1988; 1989; 1991; 1993; 1994; 1995; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 10, 12 to 18, 20, 22 to 52
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 10, 12 to 18, 20, 22 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), 1998: 26(1), 1999: 27(1), 2001: 28(1), 2003: 29(1), 2005: 30(1), 2003: 31(1), 2004: 32(1), 2005: 33(1), 2006: 34(1-3), 2007: 35(1-3), 2008: 36(1-3), 2009: 37(1-4), 2010: 38(1-4), 2011: 39(1-4), 2012: 40(1-4), 2013: 41(1-4), 2014: 42(1-4), 2015: 43(1-4), 2016: 44(1-4), 2017: 45(1-4), 2018: 46(1-4), 2019: 47(1-4), 2020: 48(1-4), 2021: 49(1-4), 2022: 50(1-4), 2023: 51(1-4), 2024: 52(1-4), 2025: 53(1-4)
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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; 4 (2 to 4); 5 (1, 2-3, 4); 25 (1); 26; 27; 28; 29; 31; 32; 33; 34 (2, 3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1, 2, 3-4); 44 (1-2, 3, 4); 45 (1-2, 3, 4); 46 (1 to 4); 47 (1 to 4); 48 (1, 2-3, 4); 49 (1-2, 3-4); 51 (2-3, 4); 52 (1, 2-3, 4)
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Library of Congress
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Preserved
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2025-04-07
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38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 3-4); 44 (1-2, 3, 4); 45 (1-2, 3, 4); 46 (1 to 4); 47 (1 to 4); 48 (1, 2-3, 4); 49 (1-2, 3-4); 50 (1, 2-3, 4); 51 (1, 2-3, 4); 52 (1, 2-3, 4)
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