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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1-4); 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 to 4); 13 (, 1-4); 14 (, 1 to 6); 15 (, 1 to 6); 16 (, 1 to 6); 17 (, 1 to 6); 18 (, 1 to 4); 19 (, 3); 21 (, 6); 24 (, 2 to 4); 25 (, 1 to 6); 26 (, 1 to 6); 27 (, 1 to 3, 6 to 8); 28 (, 1 to 8); 29 (, 1 to 8); 30 (, 1 to 8); 31 (, 1 to 8); 32 (, 1 to 8); 33 (, 2 to 8); 34 (, 1 to 8); 35 (, 1-2, 3-4, 5-6, 7, 8); 36 (, 1, 2-3, 4 to 6, 7-8); 37 (, 1 to 4, 5-8); 38 (, 1-2, 3 to 6, 7-8); 39 (, 1, 2, 3-4, 5, 6, 7-8); 40 (, 1, 2, 3-4, 5-6); 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2006; 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 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 41
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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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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 5(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1997: 12(1-4), 1998: 13(1-4), 1999: 14(1-6), 2000: 15(1-6), 2001: 16(1-6), 2002: 17(1-6), 2003: 18(1-6), 2004: 19(1-6), 2005: 20(1-6), 2006: 21(1-6), 2007: 22(1-6), 2008: 23(1-6), 2009: 24(1-6), 2010: 25(1-6, S 8, S 9, sup9), 2011: 26(1-6, S 10, S 11), 2012: 27(1-8), 2013: 28(1-8), 2014: 29(1-8), 2015: 30(1-8), 2016: 31(1-8), 2017: 32(1-8), 2018: 33(1-8), 2019: 34(1-8), 2020: 35(1-8), 2021: 36(1-8), 2022: 37(1-8), 2023: 38(1-8), 2024: 39(1-8), 2025: 40(1-8), 2026: 41(1)
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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 (sup6, 1 to 6); 3 (1 to 8); 12 (1 to 4); 13 (1-4); 14 (2 to 6); 15 (1 to 6); 16 (sup3, 1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (sup4, 1 to 6); 21 (sup7, 1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (sup8, 1 to 6); 26 (sup1, 1 to 6); 27 (1 to 8); 28 (1 to 8); 29 (sup1, 1 to 8); 31 (1 to 8); 32 (1 to 8); 33 (1 to 8); 34 (1 to 8); 35 (1-2, 3-4, 5-6, 7, 8); 36 (1, 2-3, 4 to 6, 7-8); 37 (1 to 4, 5-8); 38 (1-2, 3 to 6); 39 (1, 2, 3-4, 5, 6, 7-8)
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Library of Congress
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Preserved
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2025-04-07
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25 (sup9, sup8, 1 to 6); 26 (sup10, sup11, 1 to 6); 27 (1 to 8); 28 (1 to 8); 29 (sup1, 1 to 8); 30 (1 to 8); 31 (1 to 8); 32 (1 to 8); 33 (1 to 8); 34 (1 to 8); 35 (1-2, 3-4, 5-6, 7, 8); 36 (1, 2-3, 4 to 7-8); 37 (1 to 5-8); 38 (1-2, 3 to 7-8); 39 (1 to 3-4, 5)
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