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Internet Archive
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Preserved
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2025-08-08
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5 to 19
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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 3); 2 (, 1 to 4); 3 (, 1 to 4); 4 (, 1 to 4); 5 (, 1 to 4); 6 (, 1 to 4); 7 (, 1 to 4); 8 (, 1 to 4); 9 (, 1 to 4); 10 (, 1 to 4); 11 (, 1 to 4); 12 (, 1 to 4); 13 (, 1 to 4); 14 (, 1 to 4); 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 6); 22 (, 1 to 6); 23 (, 1 to 6); 24 (, 1 to 6); 25 (, 1 to 6); 26 (, 1, 2-3, 4 to 6); 27 (, 1 to 6); 28 (, 1 to 6); 29 (, 1 to 6); 30 (, 1, 2-3, 4 to 6); 31 (, 1 to 7); 32 (, 1 to 7); 33 (, 1 to 7); 34 (, 1 to 7); 35 (, 1 to 7); 36 (, 1 to 7); 37 (, 1 to 7); 38 (, 1 to 7); 39 (, 1 to 7); 40 (, 1 to 3); 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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Portico
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Preserved
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2026-02-12
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Preserved : 1989: 4(1-4), 1990: 5(1-4), 1991: 6(1-4), 1992: 7(1-4), 1993: 8(1-4), 1994: 9(1-4), 1995: 10(1-4), 1996: 11(1-4), 1997: 12(1-4), 1998: 13(1-4), 1999: 14(1-4), 2000: 15(1-4), 2001: 16(1-4), 2002: 17(1-4), 2003: 18(1-4), 2004: 19(1-4), 2005: 20(1-4), 2006: 21(1-6), 2007: 22(1-6), 2008: 23(1-6), 2009: 24(1-6), 2010: 25(1-6), 2011: 26(1-6), 2012: 27(1-6), 2013: 28(1-6), 2014: 29(1-6), 2015: 30(1-6), 2016: 31(1-7), 2017: 32(1-7), 2018: 33(1-7), 2019: 34(1-7), 2020: 35(1-7), 2021: 36(1-7), 2022: 37(1-7), 2023: 38(1-7), 2024: 39(1-7), 2025: 40(1-7)
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 39
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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 40
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LOCKSS Archive
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In Progress
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2026-02-09
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40
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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 4); 3 (1, 2-3, 4 to 6); 4 (1); 12 (2 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 6); 26 (1, 2-3, 4 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 7); 32 (1 to 7); 33 (1 to 7); 34 (1 to 7); 35 (1 to 7); 36 (1 to 7); 37 (1 to 7); 38 (1 to 7); 39 (1 to 7)
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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 (2, 3); 2 (1-4); 3 (1-4); 4 (1-4); 5 (1-4); 6 (1-4); 7 (1-4); 8 (1-4); 9 (1-4); 10 (1-4); 11 (1-4); 12 (1-4); 13 (1-4); 14 (1-4); 15 (1-4); 16 (1-4); 17 (1-4); 18 (1-4); 19 (1-4); 20 (1-4); 21 (1-6); 22 (1-6); 23 (1-6)
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Library of Congress
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Preserved
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2025-04-07
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25 (1 to 6); 26 (1, 2-3, 4 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 30 (1, 2-3, 4 to 6); 31 (1 to 7); 32 (1 to 7); 33 (1 to 7); 34 (1 to 7); 35 (1 to 7); 36 (1 to 7); 37 (1 to 7); 38 (1 to 7); 39 (1 to 6)
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