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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 6, 7-8); 2 (, 1 to 12); 3 (, 1 to 12); 4 (, 1 to 12); 5 (, 1 to 12); 6 (, 1 to 12); 7 (, 1 to 12); 8 (, 1 to 12); 9 (, 1 to 15); 11 (, 1 to 18); 12 (, 1 to 24); 13 (, 1 to 24); 14 (, 1 to 24); 15 (, 1 to 24); 16 (, 1 to 24); 17 (, 1 to 24); 18 (, 1 to 24); 19 (, 1 to 24); 20 (, 1 to 24); 21 (, 1 to 24); 22 (, 1 to 24); 23 (, 1 to 24); 24 (, 1 to 24); 25 (, 1 to 24); 26 (, 1 to 24); 27 (, 1 to 22); 28 (, 3, 5 to 24); 29 (, 1 to 24); 30 (, 1 to 24); 31 (, 1 to 24); 32 (, 1 to 13, 15 to 24); 33 (, 1 to 24); 34 (, 1 to 24); 35 (, 1 to 24); 36 (, 1 to 24); 37 (, 1 to 24); 38 (, 1 to 24); 39 (, 1 to 16); 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 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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Internet Archive
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Preserved
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2025-08-08
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1 to 9
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Portico
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Preserved
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2026-02-12
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Preserved : 1987: 1(1-8), 1988: 2(1-12), 1989: 3(1-12), 1990: 4(1-12), 1991: 5(1-12), 1992: 6(1-12), 1993: 7(1-12), 1994: 8(1-12), 1995: 9(1-15), 1996: 10(1-15), 1997: 11(1-18), 1998: 12(1-24), 1999: 13(1-24), 2000: 14(1-24), 2001: 15(1-24), 2002: 16(1-24), 2003: 17(1-24), 2004: 18(1-24), 2005: 19(1-24), 2006: 20(1-24), 2007: 21(1-24), 2008: 22(1-24), 2009: 23(1-24), 2010: 24(1-24), 2011: 25(1-24), 2012: 26(1-24), 2013: 27(1-24), 2014: 28(1-24), 2015: 29(1-24), 2016: 30(1, S1, 2-24), 2017: 31(1-24), 2018: 32(1-24), 2019: 33(1, S1, 2, S2, 3, S3, 4-24), 2020: 34(1, S1, 2, S2, 3, S3, 4, S4, 5-24), 2021: 35(1, S1, 2, S2, 3-24), 2022: 36(1-24), 2023: 37(1, S1, 2-24), 2024: 38(1, S1, 2-24), 2025: 39(1, S1, 2-13, 15, 17-24), 2026: 40(1-9)
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CLOCKSS Archive
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Preserved
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2026-02-09
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5 to 40
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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 9, 11 to 15); 2 (1 to 9, 11 to 19, 21 to 24); 3 (, 1 to 9, 11 to 19, 21 to 24); 11 (1 to 9, 11 to 18); 12 (1 to 9, 11 to 19, 21 to 24); 13 (1 to 9, 11 to 19, 21 to 24); 14 (1 to 9, 11 to 19, 21 to 24); 15 (1 to 9, 11 to 19, 21 to 24); 16 (1 to 9, 11 to 19, 21 to 24); 17 (1 to 9, 11 to 19, 21 to 24); 18 (1 to 9, 11 to 19, 21 to 24); 19 (1 to 9, 11 to 19, 21 to 24); 21 (1 to 9, 11 to 19, 21 to 24); 22 (1 to 9, 11 to 19, 21 to 24); 23 (1 to 9, 11 to 19, 21 to 24); 24 (1 to 9, 11 to 19, 21 to 24); 25 (1 to 9, 11 to 19, 21 to 24); 26 (1 to 9, 11 to 19, 21 to 24); 27 (1 to 9, 11 to 19, 21 to 24); 28 (1 to 9, 11 to 19, 21 to 24); 29 (1 to 9, 11 to 19, 21 to 24); 31 (1 to 9, 11 to 19, 21 to 24); 32 (1 to 9, 11 to 19, 21 to 24); 33 (S1, 1 to 6, 9, 11 to 19, 21 to 24); 34 (S1, 1 to 9, 11 to 19, 21 to 24); 35 (S1, 1 to 9, 11 to 19, 21 to 24); 36 (1 to 9, 11 to 19, 21 to 24); 37 (S1, 1 to 9, 11 to 19, 21 to 24); 38 (S1, 1 to 9, 11 to 19, 21 to 24); 39 (S1, 1 to 9, 11 to 19)
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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 9, 11 to 15); 2 (1 to 9, 11 to 19, 21 to 24); 3 (, 1 to 9, 11 to 19, 21 to 24); 11 (1 to 9, 11 to 18); 12 (1 to 9, 11 to 19, 21 to 24); 13 (1 to 9, 11 to 19, 21 to 24); 14 (1 to 9, 11 to 19, 21 to 24); 15 (1 to 9, 11 to 19, 21 to 24); 16 (1 to 9, 11 to 19, 21 to 24); 17 (1 to 9, 11 to 19, 21 to 24); 18 (1 to 9, 11 to 19, 21 to 24); 19 (1 to 9, 11 to 19, 21 to 24); 21 (1 to 9, 11 to 19, 21 to 24); 22 (1 to 9, 11 to 19, 21 to 24); 23 (1 to 9, 11 to 19, 21 to 24); 24 (1 to 9, 11 to 19, 21 to 24); 25 (1 to 9, 11 to 19, 21 to 24); 26 (1 to 9, 11 to 19, 21 to 24); 27 (1 to 9, 11 to 19, 21 to 24); 28 (1 to 9, 11 to 19, 21 to 24); 29 (1 to 9, 11 to 19, 21 to 24); 31 (1 to 9, 11 to 19, 21 to 24); 32 (1 to 9, 11 to 19, 21 to 24); 33 (S1, 1 to 6, 9, 11 to 19, 21 to 24); 34 (S1, 1 to 9, 11 to 19, 21 to 24); 35 (S1, 1 to 9, 11 to 19, 21 to 24); 36 (1 to 9, 11 to 19, 21 to 24); 37 (S1, 1 to 9, 11 to 19, 21 to 24); 38 (S1, 1 to 9, 11 to 19, 21 to 24); 39 (S1, 1 to 9, 11 to 19, 21, 22)
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