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Internet Archive
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Preserved
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2025-08-08
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1 to 54
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1); 2 (, 1); 3 (, 1); 4 (, 1); 5 (, 1); 6 (, 1); 7 (, 1); 8 (, 1); 9 (, 1); 10 (, 1); 11 (, 1); 12 (, 1, 3, 4); 13 (, 1); 14 (, 1); 15 (, 1); 16 (, 1); 17 (, 1); 18 (, 1 to 3); 19 (, 1 to 3); 20 (, 1 to 3); 21 (, 1, 2-3); 22 (, 1, 2-3); 23 (, 1 to 3); 24 (, 1-2, 3); 25 (, 1); 26 (, 1 to 3); 27 (, 1 to 4); 28 (, 1 to 4); 29 (, 1 to 4); 30 (, 1 to 4); 31 (, 1 to 4); 32 (, 1 to 4); 33 (, 1 to 4); 34 (, 1 to 4); 35 (, 1 to 4); 36 (, 1 to 4); 37 (, 1 to 4); 38 (, 1 to 4); 39 (, 1-2, 3-4); 40 (, 1 to 4); 41 (, 1 to 4); 42 (, 1-2, 3, 4); 43 (, 1, 2-3, 4); 44 (, 1-2, 3-4); 45 (, 1, 2-3, 4); 46 (, 1-2, 3, 4); 47 (, 1 to 4); 48 (, 1 to 4); 49 (, 1 to 4); 50 (, 1, 2, 3-4); 51 (, 1, 2-3, 4); 52 (, 1, 2-3, 4); 53 (, 1, 2-3, 4); 54 (, 1 to 4); 55 (, 1, 2-3, 4); 56 (, 1, 2, 3-4); 57 (, 1 to 4); 58 (, 1 to 4); 59 (, 1-2, 3-4); 60 (, 1 to 4); 61 (, 1, 2, 3-4); 62 (, 1, 2-3, 4); 63 (, 1, 2-3, 4); 64 (, 1-2, 3-4); 65 (, 1 to 4); 66 (, 1-2, 3, 4); 67 (, 1 to 4); 68 (, 1-2, 3-4); 69 (, 1 to 4); 70 (, 1 to 4); 71 (, 1 to 4); 72 (, 1 to 4); 73 (, 1, 2, 3-4); 74 (, 1-2, 3-4); 75 (, 1 to 4); 76 (, 1 to 4); 77 (, 1 to 4); 78 (, 1 to 4); 79 (, 1 to 4); 80 (, 3, 4); 81 (, 1 to 4); 82 (, 1 to 4); 83 (, 1 to 4); 84 (, 1 to 4); 85 (, 1 to 4); 86 (, 1 to 3); 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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Portico
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Preserved
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2026-02-12
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Preserved : 1971: 1(1), 1972: 2(1), 1973: 3(1), 1974: 4(1), 1975: 5(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1978: 8(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1980: 11(1), 1981: 12(1), 1981: 13(1), 1982: 14(1), 1982: 15(1)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1984: 19(1)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1985: 21(1)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1988: 25(1)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1994: 31(4)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1996: 36(1), 1997: 37(1-4), 1997: 38(1-4), 1998: 39(1-4), 1998: 40(1-4), 1999: 41(1-4), 1999: 42(1-4), 2000: 43(1-4), 2000: 44(1-4), 2001: 45(1-4), 2001: 46(1-4), 2002: 47(1-4), 2002: 48(1-4), 2003: 49(1-4), 2003: 50(1-4), 2004: 51(1-4), 2004/2005: 52(1-4), 2005: 53(1-4), 2005: 54(1-4), 2006: 55(1-4), 2007: 56(1-4), 2007: 57(1-4), 2008: 58(1-4), 2008: 59(1-4), 2009: 60(1-4), 2009: 61(1-4), 2009: 62(1-4), 2010: 63(1-4), 2010: 64(1-4), 2011: 65(1-4), 2011: 66(1-4), 2012: 67(1-3), 2012: 68(1-4), 2013: 69(1-4), 2013: 70(1-3), 2014: 71(1-4), 2014: 72(1-3), 2015: 73(2-4), 2015: 74(1-4), 2016: 75(1-4), 2016: 76(1-4), 2017: 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), 2026: 87(1)
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LOCKSS Archive
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In Progress
|
2026-02-09
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67, 68
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LOCKSS Archive
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Preserved
|
2026-02-09
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69 to 79
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CLOCKSS Archive
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Preserved
|
2026-02-09
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1 to 55, 57, 59, 61 to 87
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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 : 18 (3); 37 (1-4); 38 (1-4); 39 (1-2, 3-4); 40 (1, 2, 4); 41 (1-4); 42 (1-2, 3, 4); 43 (1, 2-3, 4); 44 (1-2, 3-4); 45 (1, 2-3, 4); 46 (1-2, 3, 4); 47 (1-4); 48 (1-4); 49 (1-4); 50 (1, 2, 3-4); 51 (1, 2-3, 4); 52 (1, 2-3, 4); 53 (1, 2-3, 4); 54 (1-4); 55 (1, 2-3, 4); 56 (1, 2, 3-4); 57 (1-4); 58 (1-4); 59 (1-2, 3-4); 60 (1-4); 61 (1, 2, 3-4); 62 (1, 2-3, 4); 63 (1, 2-3, 4); 64 (1-2, 3-4); 65 (1-4); 66 (1-2, 3, 4); 67 (1-4); 68 (1-2, 3-4); 69 (1-4); 70 (1-4); 71 (1-4); 72 (1-4); 73 (1, 2, 3-4); 74 (1-2, 2, 3-4); 75 (1-4); 76 (1-4); 77 (1-4); 78 (1-4); 79 (1-4); 80 (1-3)
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Library of Congress
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Preserved
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2025-04-07
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79 (1 to 4); 80 (1 to 4); 81 (1 to 4); 82 (1 to 4); 83 (1 to 4); 84 (1 to 4); 85 (1 to 4)
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National Digital Preservation Program, China
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Preserved
|
2025-10-23
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Preserved : 4 (1 to 4); 5 (1 to 3); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1, 3); 41 (1 to 4); 42 (1, 3, 4); 43 (1, 2, 4); 44 (1, 3); 45 (1, 2, 4); 46 (1, 3, 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1, 2, 4); 52 (1, 2, 4); 53 (1, 2, 4); 54 (1 to 4); 55 (1, 2, 4); 56 (1 to 3); 57 (1 to 4); 58 (1 to 4); 59 (1, 3); 61 (1 to 3); 62 (1, 2, 4); 63 (1, 2, 4); 64 (1, 3); 65 (1 to 4); 66 (1, 3, 4); 67 (1 to 4); 68 (1, 3); 69 (1 to 4); 71 (1 to 4); 72 (1 to 4); 73 (1 to 3); 74 (1, 3); 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 (1 to 4); 85 (1 to 4)
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National Digital Preservation Program, China
|
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Preserved
|
2025-12-04
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Preserved : 4 (1 to 4); 5 (1 to 3); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1, 3); 41 (1 to 4); 42 (1, 3, 4); 43 (1, 2, 4); 44 (1, 3); 45 (1, 2, 4); 46 (1, 3, 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1, 2, 4); 52 (1, 2, 4); 53 (1, 2, 4); 54 (1 to 4); 55 (1, 2, 4); 56 (1 to 3); 57 (1 to 4); 58 (1 to 4); 59 (1, 3); 61 (1 to 3); 62 (1, 2, 4); 63 (1, 2, 4); 64 (1, 3); 65 (1 to 4); 66 (1, 3, 4); 67 (1 to 4); 68 (1, 3); 69 (1 to 4); 71 (1 to 4); 72 (1 to 4); 73 (1 to 3); 74 (1, 3); 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 (1 to 4); 85 (1 to 4)
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