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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, 2); 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, 2 to 4); 9 (, 1 to 4); 10 (, 1 to 4); 11 (, 1 to 4); 12 (, 1 to 4); 13 (, 1 to 6); 14 (, 1 to 12); 15 (, 1 to 12); 16 (, 1 to 12); 17 (, 1 to 24); 18 (, 1 to 50); 19 (, 1 to 50); 20 (, 1 to 50); 21 (, 1 to 12, 14, 16 to 50); 22 (, 1 to 50); 23 (, 1 to 50); 24 (, 1 to 49); 25 (, 4, 8 to 50); 26 (, 1 to 50); 27 (, 1 to 50); 28 (, 1 to 50); 29 (, 1 to 50); 30 (, 1 to 50); 31 (, 1 to 50); 32 (, 1 to 50); 33 (, 1 to 50); 34 (, 1 to 10); 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
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CLOCKSS Archive
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Preserved
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2026-02-09
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19 to 37
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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 1(1-2), 1991: 2(1-4), 1992: 3(1-4), 1993: 4(1-4), 1994: 5(1-4), 1995: 6(1-4), 1996: 7(1-4), 1997: 8(1-3, 3, A, 4), 1998: 9(1-4), 1999: 10(1-4), 2000: 11(1-4), 2001: 12(1-4), 2002: 13(1-6), 2003: 14(9-12), 2004: 15(1-12), 2005: 16(1-12), 2006: 17(1-24), 2007: 18(1-50), 2008: 19(1-50), 2009: 20(1-50), 2010: 21(1-50), 2011: 22(1-50), 2011/2012: 23(1-17, 23-50), 2012/2013: 24(1-50), 2013/2014: 25(1-50), 2014/2015: 26(1-50), 2015/2016: 27(1-50), 2016/2017: 28(1-50), 2017/2018: 29(1-50), 2018/2019: 30(1-50), 2020: 31(1-50), 2020/2021: 32(1-50), 2022: 33(1-50), 2023: 34(1-50), 2024: 35(1-50), 2025: 36(1-50), 2026: 37(1-6)
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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 4); 2 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 3 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 9 (1 to 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 6); 14 (1 to 9, 11, 12); 15 (1 to 9, 11, 12); 16 (1 to 9, 11, 12); 17 (1 to 9, 11 to 19, 21 to 24); 18 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 19 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 21 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 22 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 23 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 24 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 25 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 26 (1 to 7, 9, 11 to 17, 19, 21 to 29, 31 to 38, 41 to 49); 27 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 28 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 29 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 31 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 32 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 33 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 34 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 35 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 36 (1 to 9, 11 to 19, 21 to 29, 31 to 35)
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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 4); 2 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 3 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 9 (1 to 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 6); 14 (1 to 9, 11, 12); 15 (1 to 9, 11, 12); 16 (1 to 9, 11, 12); 17 (1 to 9, 11 to 19, 21 to 24); 18 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 19 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 21 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 22 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 23 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 24 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 25 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 26 (1 to 7, 9, 11 to 17, 19, 21 to 29, 31 to 38, 41 to 49); 27 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 28 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 29 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 31 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 32 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 33 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 34 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 35 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 36 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 44)
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