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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); 2 (, 1 to 4); 3 (, 1 to 4); 4 (, 1 to 4); 5 (, 1 to 4); 6 (, 1 to 6); 7 (, 1 to 6); 8 (, 1 to 8); 9 (, 1 to 8); 10 (, 1 to 12); 11 (, 1 to 12); 12 (, 1 to 12); 13 (, 1 to 12); 14 (, 1 to 12); 15 (, 1 to 12); 16 (, 1 to 12); 17 (, 1 to 12); 18 (, 1 to 12); 19 (, 1 to 14); 20 (, 1 to 12, 13-14); 21 (, 1 to 12, 13-14); 22 (, 1 to 6, 7-8, 9 to 12, 13-14); 23 (, 1 to 6, 7-8, 9 to 12, 13-14); 24 (, 1 to 6, 7-8, 9 to 12, 13-14); 25 (, 1 to 6, 7-8, 9 to 12, 13-14); 26 (, 1 to 3, 4-5, 6, 7-8, 9 to 12, 13-14); 27 (, 1 to 6, 7-8, 9 to 12, 13-14); 28 (, 1 to 4, 5-6, 7 to 12, 13-14); 29 (, 1 to 6, 7-8, 9 to 12, 13-14); 30 (, 1 to 4, 5-6, 7 to 12, 13-14); 31 (, 1 to 5, 6-7, 8 to 12, 13-14); 32 (, 1 to 11, 13-14); 33 (, 1 to 12, 13-14); 34 (, 1 to 12, 13-14); 35 (, 1 to 11, 12-13, 14); 36 (, 1 to 9, 10-11, 12-14); 37 (, 1 to 11, 12-14); 38 (, 1 to 4, 6 to 14); 39 (, 1 to 11); 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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Internet Archive
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Preserved
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2025-08-08
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1 to 27
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Portico
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Preserved
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2026-02-12
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Preserved : 1989: 3(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1994: 8(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1998: 12(11), 1999: 13(1), 2000: 14(1-2, 12)
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Portico
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Preserved
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2026-02-12
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Preserved : 2002: 16(9)
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Portico
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Preserved
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2026-02-12
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Preserved : 2005: 19(3, 12-13), 2006: 20(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 2009: 23(13-14), 2010: 24(1-14), 2011: 25(1-14), 2012: 26(1-14), 2013: 27(1-14), 1998/2013/2014: 28(1-14), 2014/2015: 29(1-10)
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 38
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CLOCKSS Archive
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Preserved
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2026-02-09
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ahead-of-print to 39
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LOCKSS Archive
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In Progress
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2026-02-09
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39
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Portico
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Preserved
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2026-02-12
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Preserved : 1997: 11(1-12), 1998: 12(1-12), 1999: 13(1-12), 2000: 14(1-12), 2001: 15(1-12), 2002: 16(1-12), 2003: 17(1-12), 2004: 18(1-12), 2005: 19(1-14), 2006: 20(1-14), 2007: 21(1-14), 2008: 22(1-14), 2009: 23(1-11), 2010: 24(1-6, 9-11), 2011: 25(1-6, 9-11), 2012: 26(1-11), 2013: 27(1-12), 2014: 28(1-12), 2015: 29(1-14), 2016: 30(1-14), 2017: 31(1-14), 2018: 32(1-14), 2019: 33(1-14), 2020: 34(1-14), 2021: 35(1-14), 2022: 36(1, sup1, 1, 2-14), 2023: 37(1-14), 2024: 38(1-14), 2025: 39(1, sup1, 1, 2-14), 2026: 40(1-3)
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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 : 2 (2 to 9, 11, 12, 13-14); 3 (1 to 4, 5-6, 7 to 9, 11, 12, 13-14); 11 (1 to 9, 11, 12); 12 (1 to 9, 11, 12); 13 (1 to 9, 11, 12); 14 (1 to 9, 11, 12); 15 (1 to 9, 11, 12); 16 (1 to 9, 11, 12); 17 (1 to 9, 11, 12); 18 (1 to 9, 11, 12); 19 (1 to 9, 11 to 14); 21 (1 to 9, 11, 12, 13-14); 22 (sup1, 1 to 6, 7-8, 9, 11, 12, 13-14); 23 (1 to 6, 7-8, 9, 11, 12, 13-14); 24 (1 to 6, 7-8, 9, 11, 12, 13-14); 25 (1 to 6, 7-8, 9, 11, 12, 13-14); 26 (1 to 3, 4-5, 6, 7-8, 9, 11, 12, 13-14); 27 (1 to 6, 7-8, 9, 11, 12, 13-14); 28 (1 to 4, 5-6, 7 to 9, 11, 12, 13-14); 29 (1 to 6, 7-8, 9, 11, 12, 13-14); 31 (1 to 5, 6-7, 8, 9, 11, 12, 13-14); 32 (1 to 9, 11, 12, 13-14); 33 (sup1, 1 to 9, 11, 12, 13-14); 34 (1 to 9, 11, 12, 13-14); 35 (1 to 9, 11, 12-13, 14); 36 (sup1, 1 to 9, 12-14); 37 (sup1, 1 to 9, 11, 12-14); 38 (1 to 9, 11 to 14); 39 (1 to 4, 6)
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Library of Congress
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Preserved
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2025-04-07
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24 (1 to 7-8, 9 to 13-14); 25 (1 to 7-8, 9 to 13-14); 26 (1 to 4-5, 6, 7-8, 9 to 13-14); 27 (1 to 7-8, 9 to 13-14); 28 (1 to 5-6, 7 to 13-14); 29 (1 to 7-8, 9 to 13-14); 30 (1 to 5-6, 7 to 13-14); 31 (1 to 6-7, 8 to 13-14); 32 (1 to 13-14); 33 (1 to 13-14); 34 (1 to 13-14); 35 (1 to 12-13, 14); 36 (sup1, 1 to 10-11, 12-14); 37 (sup1, 1 to 12-14); 38 (1 to 14)
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