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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 2 (1 to 6); 3 (, 1 to 6); 4 (, 1 to 6); 5 (, 1 to 6); 6 (, 1 to 6); 7 (, 1 to 6); 8 (, 1 to 6); 9 (, 1 to 6); 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 (, 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 6); 29 (, 1 to 6); 30 (, 1 to 6); 31 (, 1 to 6); 32 (, 1 to 6); 33 (, 1 to 6); 34 (, 1 to 6); 35 (, 1 to 6); 36 (, 1 to 6); 37 (, 1 to 6); 38 (, 1 to 6); 39 (, 1 to 6); 40 (, 1 to 6); 41 (, 1 to 6); 42 (, 1 to 6); 43 (, 1 to 6); 44 (, 1 to 6); 45 (, 1 to 6); 46 (, 1 to 6); 47 (, 1 to 6); 48 (, 1 to 6); 49 (, 1 to 6); 50 (, 1 to 6); 51 (, 1 to 6); 52 (, 1 to 6); 53 (, 1 to 6); 54 (, 1 to 6); 55 (, 1 to 6); 56 (, 1 to 4, 5-6); 57 (, 1-2, 3-4, 5-6); 58 (, 1-2, 3-4, 5-6); 59 (, 1-2, 3-4, 5-6); 60 (, 1-2, 3-4, 5-6); 61 (, 1-2, 3-4, 5-6); 62 (, 1 to 6); 63 (, 1 to 6); 64 (, 1 to 6); 65 (, 1 to 6); 66 (, 1 to 6); 67 (, 1 to 6); 68 (, 1 to 6); 69 (, 1 to 6); 70 (, 1 to 6); 71 (, 1 to 6); 72 (, 1 to 6); 73 (, 1 to 6); 74 (, 1 to 6); 75 (, 1 to 6); 76 (, 1 to 6); 77 (, 1 to 6); 78 (, 1 to 6); 79 (, 1 to 6); 80 (, 1 to 6); 81 (, 1 to 6); 82 (, 1 to 6); 83 (, 1 to 6); 84 (, 1 to 6); 85 (, 1 to 6); 86 (, 1 to 6); 87 (, 1 to 6); 88 (, 1 to 6); 89 (, 1 to 6); 90 (, 1 to 6); 91 (, 1 to 6); 92 (, 1, 2); 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 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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Internet Archive
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Preserved
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2025-08-08
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4 to 25
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CLOCKSS Archive
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Preserved
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2026-02-09
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2 to 92
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Portico
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Preserved
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2026-02-12
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Preserved : 1968: 9(3, 6), 1969: 10(5), 1969: 11(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1973: 18(5), 1973: 19(1), 1974: 20(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1975: 22(6), 1975: 23(4), 1976: 24(4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1977: 27(4), 1978: 28(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1988: 48(3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1989: 51(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 53(4), 1991: 55(1), 1992: 56(1, 3), 1992: 57(3-6), 1993: 58(1-6), 1993: 59(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1995: 62(5)
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Portico
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Preserved
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2026-02-12
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Preserved : 1999: 66(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 2001: 68(3)
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Portico
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Preserved
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2026-02-12
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Preserved : 2005: 72(4, 6), 2006: 73(2-6), 2007: 74(1-2, 4-6), 2008: 75(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 2011: 78(4), 2012/2013: 79(1-2, 4-6), 2013/2014: 80(1-6), 2014/2015: 81(1-6), 2015/2016: 82(1-6), 2016/2017: 83(1-6), 2017/2018: 84(1-6), 2018/2019: 85(1-6), 2019/2020: 86(1-6), 2020/2021: 87(1-6), 2021/2022: 88(1-6), 2022/2023: 89(1-6), 2023/2024: 90(1-6), 2024/2025: 91(1-4, 6), 2025/2026: 92(2-6)
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LOCKSS Archive
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In Progress
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2026-02-09
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79
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LOCKSS Archive
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Preserved
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2026-02-09
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80 to 86
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Library of Congress
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Preserved
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2025-04-07
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85 (1 to 6); 86 (1 to 6); 87 (1 to 6); 88 (1 to 6); 89 (1 to 6); 90 (1 to 6); 91 (1 to 4)
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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 : 7 (1 to 6); 8 (1 to 6); 9 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 6); 68 (1 to 6); 69 (1 to 6); 71 (1 to 6); 72 (1 to 6); 73 (1 to 6); 74 (1 to 6); 75 (1 to 6); 76 (1 to 6); 77 (1, 2, 4 to 6); 78 (1 to 6); 79 (1 to 6); 81 (1 to 6); 82 (1 to 6); 83 (1 to 6); 84 (1 to 6); 85 (1 to 6); 86 (1 to 6); 87 (1 to 6); 88 (1 to 6); 89 (1 to 6); 91 (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 : 7 (1 to 6); 8 (1 to 6); 9 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 6); 68 (1 to 6); 69 (1 to 6); 71 (1 to 6); 72 (1 to 6); 73 (1 to 6); 74 (1 to 6); 75 (1 to 6); 76 (1 to 6); 77 (1, 2, 4 to 6); 78 (1 to 6); 79 (1 to 6); 81 (1 to 6); 82 (1 to 6); 83 (1 to 6); 84 (1 to 6); 85 (1 to 6); 86 (1 to 6); 87 (1 to 6); 88 (1 to 6); 89 (1 to 6); 91 (1 to 5)
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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 : 77 (1 to 6); 78 (1, 2)
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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 : 77 (1 to 6); 78 (1, 2)
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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 : 67 (5, 6); 68 (1-6); 69 (1-6); 70 (1-6); 71 (1-6); 72 (1-6); 73 (1, 3-5); 74 (1-6); 75 (1-6); 76 (1-3, 5, 6); 77 (1-6); 78 (1-6); 79 (1-6); 80 (1-6); 81 (1-6); 82 (1-6); 83 (1-6); 84 (1-6); 85 (1-6); 86 (1-4)
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