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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 70 (2 to 4); 71 (, 1 to 4); 72 (, 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, 3, 4); 81 (, 1, 2, 4); 82 (, 3, 4); 83 (, 1 to 4); 84 (, 1 to 4); 2009; 2010; 2011; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023
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Internet Archive
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Preserved
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2025-08-08
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1 to 67
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Portico
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Preserved
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2026-02-12
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Preserved : 1964: 25(1-4), 1965: 26(1-4), 1966: 27(1, 3-4), 1967: 28(1-4), 1968: 29(1-4), 1969: 30(1-4), 1970: 31(1-4), 1971: 32(1-4), 1972: 33(1-4), 1973: 34(1-2, 4), 1974: 35(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1975: 36(2-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1977: 38(1-4), 1978: 39(1-4), 1979: 40(1-4), 1980: 41(1-4), 1981: 42(1-4), 1982: 43(1-4), 1983: 44(1-4), 1984: 45(1-4), 1985: 46(1-4), 1986/1987: 47(1-4), 1987/1988: 48(1-4), 1988/1989: 49(1-4), 1989: 50(1-4), 1990: 51(1-4), 1991: 52(1-4), 1992: 53(1-4), 1993: 54(1-4), 1994: 55(1-4), 1995: 56(1-4), 1996: 57(1-4), 1997: 58(1-4), 1998: 59(1-4), 1999: 60(1-4), 2000: 61(1-4), 2001: 62(1-4), 2002: 63(1-4), 2003: 64(1-4), 2004: 65(1-4), 2005: 66(1-4), 2006: 67(1-4), 2007: 68(1-4), 2008: 69(1-4), 2009: 70(1-4), 2010: 71(1-4), 2010/2011: 72(1-4), 2012: 73(1-4), 2013: 74(1-4), 2014: 75(1-4), 2015: 76(1-4), 2015/2016: 77(1-4), 2017: 78(1-4), 2018: 79(1-4), 2019: 80(1-4), 2020: 81(1-4), 2021: 82(1-4), 2022: 83(1-4), 2023: 84(1-4), 2024: 85(1-4), 2025: 86(1-4)
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LOCKSS Archive
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Preserved
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2026-02-09
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69 to 85
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CLOCKSS Archive
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In Progress
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2026-02-09
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69, 70, 77 to 86
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CLOCKSS Archive
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Preserved
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2026-02-09
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71 to 76
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LOCKSS Archive
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In Progress
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2026-02-09
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86
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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 : ; 8 (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); 81 (1 to 4); 82 (1 to 4); 83 (1 to 4); 84 (3, 4); 85 (1 to 3); 86 (1 to 3)
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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 : ; 8 (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); 81 (1 to 4); 82 (1 to 4); 83 (1 to 4); 84 (3, 4); 85 (1 to 3); 86 (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 : 81
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British Library
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Preserved
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2019-09-18
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Preserved : 75 (1 to 2; 4), 76 (1; 3 to 4), 77 (1 to 3), 78 (1 to 4), 79 (2 to 4)
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