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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, 2, 3-4); 3 (, 1, 2-3, 4); 4 (, 1 to 4); 5 (, 1 to 4); 6 (, 1 to 4); 7 (, 1 to 4); 8 (, 1 to 4); 9 (, 1 to 6); 10 (, 1 to 6); 11 (, 1 to 6, 7-8); 12 (, 1, 2-3, 4 to 6, 7-8); 13 (, 1-2, 3, 4-5, 6 to 8); 14 (, 1 to 10); 15 (, 1 to 10); 16 (, 1 to 6, 7-8, 9-10); 17 (, 1 to 4, 5-6, 7, 8-9, 10); 18 (, 1, 2, 3-4, 5 to 8, 9-10); 19 (, 1, 2, 3-4, 5 to 8, 9-10); 20 (, 1, 2-4, 5 to 10); 21 (, 1 to 3, 4-5, 6 to 10); 22 (, 1-2, 3 to 6, 7-8, 9, 10); 23 (, 1 to 10); 24 (, 1-2, 3 to 10); 25 (, 1 to 10); 26 (, 1-2, 3, 8 to 10); 27 (, 1 to 10); 28 (, 1 to 10); 29 (, 1 to 10); 30 (, 1, 2, 4 to 10); 31 (, 1 to 4, 5-6, 7-8, 9-10); 32 (, 1 to 6, 7-8, 9-10); 33 (, 1 to 3, 5 to 14); 34 (, 1 to 14); 35 (, 1 to 15); 36 (, 1); 37 (, 1); 38 (, 1); 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
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Internet Archive
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Preserved
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2025-08-08
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1 to 10
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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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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 4(1-4), 1991: 5(1-4), 1992: 6(1-4), 1993: 7(1-4), 1994: 8(1-4), 1995: 9(1-6), 1996: 10(1-6), 1997: 11(1-8), 1998: 12(1-8), 1999: 13(1-8), 2000: 14(1-10), 2001: 15(1-10), 2002: 16(1-10), 2003: 17(1-10), 2004: 18(1-10), 2004/2005: 19(1-10), 2006: 20(1-10), 2007: 21(1-10), 2008: 22(1-10), 2009: 23(1-10), 2010: 24(1-10), 2011: 25(1-10), 2012: 26(1-10), 2013: 27(1-10), 2014: 28(1-10), 2015: 29(1-10), 2016: 30(1-10), 2017: 31(1-10), 2018: 32(1-10), 2019: 33(1-14), 2020: 34(1-14), 2021: 35(1-15), 2022: 36(1), 2023: 37(1), 2024: 38(1), 2025: 39(1), 2026: 40(1)
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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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22 to 31
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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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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 2 (1, 2-4, 5 to 9); 3 (1 to 9); 11 (1 to 6, 7-8); 12 (1, 2-3, 4 to 6, 7-8); 13 (1-2, 3, 4-5, 6 to 8); 14 (1 to 9); 15 (1 to 9); 16 (1 to 6, 7-8, 9-1); 17 (1 to 4, 5-6, 7, 8-9); 18 (1, 2, 3-4, 5 to 8, 9-1); 19 (1, 2, 3-4, 5 to 8, 9-1); 21 (1 to 3, 4-5, 6 to 9); 22 (1-2, 3 to 6, 7-8, 9); 23 (1 to 9); 24 (1-2, 3 to 9); 25 (1 to 9); 26 (1-2, 3 to 9); 27 (1 to 9); 28 (1 to 9); 29 (1 to 9); 31 (1 to 4, 5-6, 7-8, 9-1); 32 (1 to 6, 7-8, 9-1); 33 (1 to 9, 11 to 14); 34 (1 to 9, 11 to 14); 35 (1 to 9, 11 to 15); 36 (1); 37; 38
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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, 2, 3-4); 3 (1, 2, 4); 4 (1-4); 5 (1-4); 6 (1-4); 7 (1-4); 8 (1-4); 9 (1-6); 10 (1-6); 11 (1-6, 7-8); 12 (1, 2-3, 4-6); 13 (1-2, 3, 4-5, 6-8); 14 (1-10); 15 (1-4, 6-10); 16 (1-6, 7-8, 9-10); 17 (1, 3, 4, 5-6, 7, 8-9, 10); 18 (2, 3-4, 5-8, 9-10); 20 (2-4, 5-10); 21 (1-3, 4-5, 6-10); 22 (1-2, 3-6, 7-8, 9)
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Library of Congress
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Preserved
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2025-04-07
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30 (10); 31 (1 to 5-6, 7-8, 9-10); 32 (1 to 7-8, 9-10); 33 (1 to 3, 5 to 14); 34 (1 to 14); 35 (1 to 15); 36 (1); 37 (1)
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