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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 48 (1 to 4); 49 (, 1 to 6); 50 (, 1 to 6); 51 (, 1 to 6); 52 (, 1 to 6); 53 (, 1); 54 (, 1 to 6); 55 (, 1 to 6); 56 (, 1 to 6); 57 (, 1 to 6); 58 (, 1 to 6); 59 (, 1 to 6); 60 (, 1 to 6); 61 (, 1 to 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 (, 2 to 6); 81 (, 1 to 3); 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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48 to 62
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Portico
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Preserved
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2026-02-12
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Preserved : 1970: 26(1-6), 1971: 27(1-6), 1972: 28(1-6), 1973: 29(1-6), 1974: 30(1-6), 1975: 31(1-6), 1976: 32(1-6), 1977: 33(1-6), 1978: 34(1-6), 1979/1980: 35(1-6), 1980/1981: 36(1-6), 1981: 37(1-5), 1982/1983: 38(1-6), 1983: 39(1-6), 1984: 40(1-6), 1985: 41(1-6), 1986: 42(1-6), 1987: 43(1-6), 1988: 44(1-6), 1989: 45(1-6), 1990: 46(1-6), 1991: 47(1-6), 1992: 48(1-4), 1993: 49(1-6), 1994: 50(1-6), 1995: 51(1-6), 1996: 52(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1998: 54(1-6), 1999: 55(1, 3)
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Portico
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Preserved
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2026-02-12
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Preserved : 2000: 56(3, 5), 2001: 57(2, 4-6), 2002: 58(3)
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Portico
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Preserved
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2026-02-12
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Preserved : 2004: 60(2, 4-5), 2005: 61(3, 6), 2006: 62(5-6), 2007: 63(1-2, 4), 2008: 64(3-5), 2009: 65(1, 3-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 2011: 67(4-5)
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LOCKSS Archive
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In Progress
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2026-02-09
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68, 75
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Portico
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Preserved
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2026-02-12
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Preserved : 2012: 68(6), 2013: 69(1-3, 6), 2014: 70(1-4, 6), 2015: 71(2-6), 2016: 72(1-6), 2017: 73(1-6), 2018: 74(1-6), 2019: 75(1-6), 2019/2020: 76(1-6), 2021: 77(1-6), 2022: 78(1-6), 2023: 79(1-6), 2024: 80(1-5), 2025: 81(1-6), 2026: 82(1)
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LOCKSS Archive
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Preserved
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2026-02-09
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69 to 74
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Library of Congress
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Preserved
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2025-04-07
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73 (4); 74 (2 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 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 : 6 (1 to 6); 7 (1 to 6); 8 (1 to 6); 53 (1); 54 (2 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6); 61 (1 to 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); 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)
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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 : 6 (1 to 6); 7 (1 to 6); 8 (1 to 6); 53 (1); 54 (2 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6); 61 (1 to 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); 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)
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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 : 54 (6); 55 (1-6); 56 (1-6); 57 (1-6); 58 (1-6); 59 (1-6); 60 (1-6); 61 (1-6); 62 (1-6); 63 (1, 2, 4-6); 64 (1-6); 65 (1-6); 66 (1-6); 67 (1-6); 68 (1-6); 69 (1-6); 70 (1-6); 71 (1-6); 72 (1-6); 73 (1-6); 74 (1-6); 75 (1-6); 106 (3)
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