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Internet Archive
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Preserved
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2025-08-08
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3 to 20
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 7 (8); 9 (2 to 6); 10 (1 to 6); 11 (1 to 6); 12 (1 to 4); 15 (S1, 1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 20 (1 to 6); 21 (s1, 1 to 6); 22 (1 to 6); 23 (s1, 1 to 6); 24 (s1, 1 to 6); 25 (s1, 1 to 6); 26 (s1, 1 to 6); 27 (s1, 1 to 6); 28 (s1, 1 to 6); 29 (S1, 1 to 6); 30 (S1, 1 to 6); 31 (S1, 1 to 6); 32 (, 1 to 6); 33 (S1, 1 to 6); 34 (1 to 6); 35 (S1, 1 to 6); 36 (S1, 1, 2, 4 to 6); 37 (S1, 1 to 6); 38 (S1, 1 to 6); 39 (S1, 1 to 6); 40 (1)
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Portico
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Preserved
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2026-04-02
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Preserved : 1987: 1(1-6), 1988: 2(1, S 1, 2-6), 1989: 3(1, S 1, 2-6), 1990: 4(1, S 1, 2, S 2, 3-6), 1991: 5(1-9), 1992: 6(1, S 1, 2-9), 1993: 7(1-9), 1994: 8(1-6), 1995: 9(1-6), 1996: 10(1-6), 1997: 11(1, S 1, 2-6), 1998: 12(1-6), 1999: 13(1-6), 2000: 14(1-6), 2001: 15(1-6), 2002: 16(1-6), 2003: 17(1-6), 2004: 18(1-6), 2005: 19(1-6), 2006: 20(1-6), 2007: 21(1-6), 2008: 22(1-6), 2009: 23(1-6), 2010: 24(1-6), 2011: 25(1-6), 2012: 26(1-6), 2013: 27(1-6), 2014: 28(1-6), 2015: 29(1, S1, 2-6), 2016: 30(1, S1, 2-6), 2017: 31(1, S1, 2-6), 2018: 32(1, S1, 2-6), 2019: 33(1, S1, 2-6), 2020: 34(1-6), 2021: 35(1, S1, 2-6), 2022: 36(1, S1, 2-6), 2023: 37(1, S1, 2-6), 2024: 38(1, S1, 2-6), 2025: 39(1, S1, 2-6), 2026: 40(1-2)
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CLOCKSS Archive
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Preserved
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2026-04-06
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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 : 2 (1 to 6); 3 (, 1 to 6); 11 (S1, 1 to 6); 12 (S1, 1 to 6); 13 (S1, 1 to 6); 14 (1 to 6); 15 (S1, 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 6); 29 (, 1 to 6); 31 (, 1 to 6); 32 (, 1 to 6); 33 (S1, 1 to 6); 34 (1 to 6); 35 (S1, 1 to 6); 36 (S1, 1 to 6); 37 (S1, 1 to 6); 38 (S1, 1 to 6); 39 (S1, 1 to 5)
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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 6); 11 (S1, 1 to 6); 12 (S1, 1 to 6); 13 (S1, 1 to 6); 14 (1 to 6); 15 (S1, 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 6); 29 (, 1 to 6); 31 (, 1 to 6); 32 (, 1 to 6); 33 (S1, 1 to 6); 34 (1 to 6); 35 (S1, 1 to 6); 36 (S1, 1 to 6); 37 (S1, 1 to 6); 38 (S1, 1 to 6); 39 (S1, 1 to 5)
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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 : 20 (2-6); 21 (s1, 1-6)
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