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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); 2 (, 1 to 6); 3 (, 1 to 6); 4 (, 1 to 4 to 6); 5 (, 1 to 3 to 5, 6pt1); 6 (, 1, 2 to 4 to 6); 7 (, 1pt1, 2, 3 to 5, 6); 8 (, 1, 2pt1, 3pt1, 4 to 6); 9 (, 1, 2 to 4 to 6); 10 (, 1pt1, 2 to 5, 6pt1); 11 (, 1 to 4 to 6); 12 (, 1 to 6); 13 (, 1 to 6); 14 (, 1 to 6); 15 (, 1 to 5); 16 (, 1 to 6); 17 (, 1 to 6); 18 (, 1 to 6); 19 (, 1 to 6); 20 (, 1 to 6); 21 (, 1 to 6); 22 (, 1 to 6); 23 (, 1 to 6); 24 (, 1 to 6); 25 (, 1 to 6); 26 (, 1 to 6); 27 (, 1 to 6); 28 (, 1 to 12); 29 (, 1 to 12); 30 (, 1 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 12); 37 (, 1 to 12); 38 (, 1 to 12); 39 (, 1 to 6); 1987; 1988; 1989; 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 : 1987: 1(1-6), 1988: 2(1-6), 1989: 3(1-6), 1990: 4(1-4, 5pt1, 5pt2, 6), 1991: 5(1, 2pt1, 2pt2, 3-5, 6pt1, 6pt2), 1992: 6(1-2, 3pt1, 3pt2, 4-6), 1993: 7(1pt1, 1pt2, 2-3, 4pt1, 4pt2, 5-6), 1994: 8(1, 2pt1, 2pt2, 3pt1, 3pt2, 4-6), 1995: 9(1-2, 3pt1, 3pt2, 4-6), 1996: 10(1pt1, 1pt2, 2-5, 6pt1, 6pt2), 1997: 11(1-4, 5pt1, 5pt2, 6), 1998: 12(1-6)
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 40
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Portico
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Preserved
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2026-02-12
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Preserved : 2012: 26(1-6, s24), 2013: 27(1-6, s25-s26), 2014: 28(1-12), 2015: 29(1-12), 2016: 30(1-12), 2017: 31(1-12), 2018: 32(1-12), 2019: 33(1-12), 2020: 34(1-12), 2021: 35(1-12), 2022: 36(1-12), 2023: 37(1-12), 2024: 38(1-12), 2025: 39(1-12), 2026: 40(1-2)
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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 : 2 (, 1 to 6); 3 (1 to 9, 11, 12); 13 (1 to 6); 14 (S3, 1 to 6); 15 (, 1 to 6); 16 (, 1 to 6); 17 (, 1 to 6); 18 (, 1 to 6); 19 (, 1 to 6); 21 (, 1 to 6); 22 (, 1 to 6); 23 (, 1 to 6); 24 (, 1 to 6); 25 (, 1 to 6); 26 (, 1 to 6); 27 (, 1 to 6); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 3, 5 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 9, 11, 12); 38 (1 to 9, 11, 12); 39 (1 to 9)
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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 (, 1 to 6); 3 (1 to 9, 11, 12); 13 (1pt2, 2 to 6); 14 (S3, 1 to 6); 15 (, 1 to 6); 16 (, 1 to 6); 17 (, 1 to 6); 18 (, 1 to 6); 19 (, 1 to 6); 21 (, 1 to 6); 22 (, 1 to 6); 23 (, 1 to 6); 24 (, 1 to 6); 25 (, 1 to 6); 26 (, 1 to 6); 27 (, 1 to 6); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 3, 5 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 9, 11, 12); 38 (1 to 9, 11, 12); 39 (1 to 9)
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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 : 18 (s1); 20 (1-6); 21 (s18, 2-6)
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