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