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