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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 30 (1, 2, 3-4); 31 (, 1 to 4); 32 (, 1, 2, 3-4); 33 (, 1, 2-3, 4); 34 (, 1 to 4); 35 (, 1 to 4); 36 (, 1 to 4); 37 (, 1 to 4); 38 (, 1 to 4); 39 (, 1 to 4); 40 (, 1 to 4); 41 (, 1 to 4); 42 (, 1 to 4); 43 (, 1 to 3); 44 (, 1 to 3); 45 (, 1 to 4); 46 (, 1 to 4); 47 (, 1 to 4); 48 (, 1 to 4); 49 (, 1 to 4); 50 (, 1 to 4); 51 (, 1 to 4); 52 (, 1 to 4); 53 (, 1 to 4); 54 (, 1 to 4); 55 (, 1 to 4); 56 (, 1 to 4); 57 (, 1, 2, 3-4); 58 (, 1 to 4); 59 (, 1 to 4); 60 (, 1 to 4); 61 (, 1 to 4); 62 (, 1 to 4); 63 (, 1 to 4); 64 (, 1 to 4); 65 (, 1 to 4); 66 (, 1 to 4); 67 (, 1 to 4); 68 (, 1 to 4); 69 (, 1 to 4); 70 (, 1 to 4); 71 (, 1 to 4); 72 (, 1 to 4); 73 (, 1 to 4); 74 (, 1 to 4); 75 (, 1 to 4); 76 (, 1 to 4); 77 (, 1 to 4); 78 (, 1 to 4); 79 (, 1 to 4); 80 (, 1 to 3); 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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41 to 48
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 3, 5 to 51, 53 to 81
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Portico
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Preserved
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2026-02-12
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Preserved : 1957: 2(2-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1985: 35(2), 1986: 36(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 40(3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1996: 49(3), 1997: 50(1-4), 1997: 51(1-4), 1998: 52(1-4), 1998/1999: 53(1-4), 1999: 54(1-4), 2000: 55(1-4), 2001: 56(1-4), 2002: 57(1-4), 2003: 58(1-4), 2004: 59(1-4), 2005: 60(1-4), 2006: 61(1-4), 2007: 62(1-4), 2008: 63(1-4), 2009: 64(1-4), 2010: 65(1-4), 2011: 66(1-4), 2012: 67(1-2, 4), 2013: 68(1-4), 2014: 69(1-4), 2015: 70(1-4), 2016: 71(1-4), 2017: 72(1-4), 2018: 73(1-4), 2019: 74(1-4), 2020: 75(1-4), 2021: 76(1-4), 2022: 77(1-4), 2023: 78(1-4), 2024: 79(1-3), 2025: 80(1-4), 2026: 81(1)
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LOCKSS Archive
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In Progress
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2026-02-09
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67, 74
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LOCKSS Archive
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Preserved
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2026-02-09
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68 to 73
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Library of Congress
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Preserved
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2025-04-07
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73 (1 to 4); 74 (1 to 4); 75 (1 to 4); 76 (1 to 4); 77 (1 to 4); 78 (1 to 4); 79 (1 to 3); 80 (1)
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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 : 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 3); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1 to 4); 71 (1 to 4); 72 (1 to 4); 73 (1 to 4); 74 (1 to 4); 75 (1 to 4); 76 (1 to 4); 77 (1 to 4); 78 (1 to 4); 79 (1 to 4)
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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 : 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 3); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1 to 4); 71 (1 to 4); 72 (1 to 4); 73 (1 to 4); 74 (1 to 4); 75 (1 to 4); 76 (1 to 4); 77 (1 to 4); 78 (1 to 4); 79 (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 : 69 (2 to 4)
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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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|
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Preserved : 69 (2 to 4)
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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 : 51 (1-4); 52 (1-4); 53 (1-4); 54 (1-4); 55 (1-4); 56 (1-4); 57 (1-3); 58 (1-4); 60 (1-4); 61 (1-4); 62 (1-4); 63 (1-4); 64 (1-4); 65 (1-4); 66 (1-4); 67 (1-4); 68 (1-4); 69 (1-4); 70 (1-4); 71 (1-4); 72 (1-4); 73 (1-4); 74 (1-3)
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