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Scholars Portal
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Preserved
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2026-03-19
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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 to 4); 9 (1 to 4); 10 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (s1, 1 to 6); 17 (s1, 1 to 6); 18 (1 to 12); 19 (s1, 1 to 12); 20 (s2, 1 to 12); 21 (s1, 1 to 12); 22 (s1, 1 to 12); 23 (s1, 1 to 12); 24 (s1, 1 to 12); 25 (s1, 1 to 12); 26 (s1, 1 to 12); 27 (S1, 1 to 12); 28 (S1, 1 to 12); 29 (S1, 1 to 12); 30 (S1, 1 to 12); 31 (S4, 1 to 12); 32 (S1, 1 to 12); 33 (S1, 1 to 12); 34 (1 to 12); 35 (S2, 1 to 12); 36 (S1, 1 to 12); 37 (S1, 1 to 12); 38 (1, 2)
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Internet Archive
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Preserved
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2025-08-08
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1 to 18
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Portico
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Preserved
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2026-04-09
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Preserved : 1989: 1(1-2), 1990: 2(1-4), 1991: 3(1-4), 1992: 4(1-4), 1993: 5(1-4), 1994: 6(1-4), 1995: 7(1-4), 1996: 8(1-4), 1997: 9(1-4), 1998: 10(1-6), 1999: 11(1-6), 2000: 12(1-6), 2001: 13(1-6), 2002: 14(1-6), 2003: 15(1-6), 2004: 16(1-6), 2005: 17(1-6), 2006: 18(1-12), 2007: 19(1-12), 2008: 20(1-12), 2009: 21(1-12), 2010: 22(1-12), 2011: 23(1-12), 2012: 24(1-12), 2013: 25(1-12), 2014: 26(1-12), 2015: 27(1, S1, 2, S2, 3-12), 2016: 28(1, S1, 2-12), 2017: 29(1, S1, 2, S2, 3-12), 2018: 30(1, S1, 2-12), 2019: 31(1, S1, 2, S2, 3, S3, 4, S4, 5-12), 2020: 32(1, S1, 2-12), 2021: 33(1, S1, 2, S2, 3-12), 2022: 34(1-12), 2023: 35(1, S1, 2, S2, 3-12), 2024: 36(1, S1, 2-12), 2025: 37(1, S1, 2, S2, 3-12), 2026: 38(1-3)
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CLOCKSS Archive
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Preserved
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2026-04-06
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3 to 38
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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 (, 1 to 9, 11, 12); 9 (1 to 4); 11 (1 to 3, 5, 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 (, 1 to 9, 11, 12); 31 (S1, 1 to 9, 11, 12); 32 (S1, 1 to 9, 11, 12); 33 (S1, 1 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (S1, 1 to 9, 11, 12); 36 (S1, 1 to 9, 11, 12); 37 (S1, 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 : 1 (1 to 6); 2 (, 1 to 9, 11, 12); 3 (, 1 to 9, 11, 12); 9 (1 to 4); 11 (1 to 3, 5, 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 (, 1 to 9, 11, 12); 31 (S1, 1 to 9, 11, 12); 32 (S1, 1 to 9, 11, 12); 33 (S1, 1 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (S1, 1 to 9, 11, 12); 36 (S1, 1 to 9, 11, 12); 37 (S1, 1 to 9, 11)
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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 (1, 3-8, 10-12); 19 (s2, 1-9, 11, 12)
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