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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 3 (1, 3); 4 (, 1, 2); 5 (, 1 to 4); 6 (, 1, 2); 7 (, 1-2); 8 (, 1-2); 9 (, 1, 2); 10 (, 1, 2); 11 (, 1-2); 12 (, 1-2); 13 (, 1, 2); 14 (, 1, 2); 15 (, 1-2); 16 (, 1, 2); 17 (, 1-2); 18 (, 1, 2); 19 (, 1-2); 20 (, 1, 2); 21 (, 1, 2); 22 (, 1, 2); 23 (, 1 to 3); 24 (, 1 to 3); 25 (, 1 to 4); 26 (, 1, 3 to 5); 27 (, 1 to 6); 28 (, 1 to 6); 29 (, 1 to 5); 30 (, 1 to 6); 31 (, 1, 4 to 6); 32 (, 1 to 4, 5-6); 33 (, 1 to 3, 4-5, 6); 34 (, 1 to 6); 35 (, 1 to 4, 5-6); 36 (, 1-2, 3-4, 5-6); 37 (, 1 to 6); 38 (, 1, 2-3, 4-5, 6); 39 (, 1-2, 3); 1983; 1985; 1986; 1988; 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 : 2002: 16(2), 2003: 17(1-2), 2004: 18(2), 2005: 19(1, 2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1980: 1(1-3), 1981/1982/1983: 2(1-4), 1983: 3(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1985: 4(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1988: 5(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1992/1993: 6(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1995: 9(1-2), 1996: 10(1-2), 1997: 11(1-2), 1998: 12(1-2), 1999: 13(1-2), 2000: 14(1-2), 2001: 15(1-2), 2002: 16(1-2), 2003: 17(1-2), 2004: 18(1-2), 2005: 19(1-2), 2006: 20(1-2), 2007: 21(1-2), 2008: 22(1-2), 2009: 23(1-3), 2010: 24(1-3), 2011: 25(1-4), 2012: 26(1-5), 2013: 27(1-6), 2014: 28(1-6), 2015: 29(1-6), 2016: 30(1-6), 2017: 31(1-6), 2018: 32(1-6), 2019: 33(1-6), 2020: 34(1-6), 2021: 35(1-6), 2022: 36(1-6), 2023: 37(1-6), 2024: 38(1-6), 2025: 39(1-4)
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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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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 2 (2); 3 (1 to 6); 11 (1-2); 12; 13 (2); 14 (1, 2); 15 (1-2); 16 (2); 17 (1-2); 18 (2); 19 (1-2); 21 (2); 22 (1, 2); 23 (1 to 3); 24 (1 to 3); 25 (1 to 4); 26 (1 to 5); 27 (1 to 6); 28 (1 to 6); 29 (sup1, 1 to 6); 31 (1 to 6); 32 (1 to 4, 5-6); 33 (1 to 3, 4-5, 6); 34 (1 to 6); 35 (1 to 4, 5-6); 36 (1-2, 3-4, 5-6); 37 (1 to 6); 38 (1, 2-3, 4-5, 6)
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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, 2, 4); 2 (1-4); 3 (2, 3); 4 (1, 2); 5 (3); 6 (1, 2); 7 (1-2); 8; 9; 10 (2); 11 (1-2); 12; 13 (2); 14 (1, 2); 15 (1-2); 16 (2); 17 (1-2); 18 (2); 19 (1-2); 20 (2); 21 (1); 22 (2)
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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 3); 25 (1 to 4); 26 (1 to 5); 27 (1 to 6); 28 (1 to 6); 29 (sup1, 1 to 6); 30 (1 to 6); 31 (1 to 6); 32 (1 to 5-6); 33 (1 to 4-5, 6); 34 (1 to 5); 35 (1 to 5-6); 36 (1-2, 3-4, 5-6); 37 (1 to 6); 38 (1, 2-3)
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