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Portico
|
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Preserved
|
2026-02-12
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Preserved : 1969: 1(2, 4)
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|
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Portico
|
|
Preserved
|
2026-02-12
|
|
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Preserved : 1971: 3(3), 1972: 4(2), 1973: 5(3), 1974: 6(1-2, 4)
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Scholars Portal
|
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Preserved
|
2025-09-02
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|
|
Preserved : 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 9); 24 (, 1 to 12); 25 (, 1 to 12); 26 (, 1 to 12); 27 (, 1 to 12); 28 (, 1 to 12); 29 (, 1 to 11); 30 (, 1 to 4, 5-6, 7-10, 11-12); 31 (, 1 to 4, 5-7, 8, 9-10, 11, 12); 32 (, 1 to 3, 4-5, 6-8, 9 to 12); 33 (, 1 to 3, 4-5, 6, 7-10, 11, 12); 34 (, 1-3, 4, 5-6, 7 to 12); 35 (, 1 to 3, 4-5, 6 to 15); 36 (, 1-3, 4 to 15); 37 (, 1-3, 4 to 12, 13-15); 38 (, 1-3, 4-6, 7, 8, 9-11, 12-14, 15); 39 (, 1 to 3, 4-6, 7 to 9, 10-11, 12-13, 14, 15); 40 (, 1, 2-4, 5-6, 7 to 10, 11-12, 13, 14-15); 41 (, 1 to 10, 11-13, 14-15); 42 (, 1 to 5, 6-7, 8, 9-10, 11-13, 14-15); 43 (, 1-5, 6-10, 11-15); 44 (, 1-2, 3-5, 6-7, 8-9, 10-11, 12-13, 14, 15); 45 (, 1 to 12); 46 (, 1 to 12); 47 (, 1 to 12); 48 (, 1 to 12); 49 (, 1 to 12); 50 (, 1 to 12); 51 (, 1 to 12); 52 (, 1 to 12); 53 (, 1 to 12); 54 (, 1 to 12); 55 (, 1 to 14); 56 (, 1 to 3); 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
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|
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Internet Archive
|
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Preserved
|
2025-08-08
|
|
|
1 to 37
|
|
|
CLOCKSS Archive
|
|
Preserved
|
2026-02-09
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|
|
1 to 58
|
|
|
Portico
|
|
Preserved
|
2026-02-12
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|
|
Preserved : 1975: 7(1, 5-6), 1976: 8(1, 3, 6), 1977: 9(4), 1978: 10(2, 6)
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|
|
Portico
|
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Preserved
|
2026-02-12
|
|
|
Preserved : 1980: 12(4), 1981: 13(4, 6)
|
|
|
Portico
|
|
Preserved
|
2026-02-12
|
|
|
Preserved : 1983: 15(3), 1984: 16(1, 4-5)
|
|
|
Portico
|
|
Preserved
|
2026-02-12
|
|
|
Preserved : 1988: 20(4), 1989: 21(1, 3), 1990: 22(2)
|
|
|
Portico
|
|
Preserved
|
2026-02-12
|
|
|
Preserved : 1992: 24(3, 6, 10)
|
|
|
Portico
|
|
Preserved
|
2026-02-12
|
|
|
Preserved : 1994: 26(2, 5), 1995: 27(2, 8)
|
|
|
Portico
|
|
Preserved
|
2026-02-12
|
|
|
Preserved : 1996: 28(12), 1997: 29(1-11), 1998: 30(1-12), 1999: 31(1-12), 2000: 32(1-12), 2001: 33(1-12), 2002: 34(1-12), 2003: 35(1-15), 2004: 36(1-15), 2005: 37(1-15), 2006: 38(1-15), 2007: 39(1-15), 2008: 40(1-15), 2009: 41(1-15), 2010/2011: 42(1-15), 2012: 43(1-15), 2012: 44(1-11), 2013: 45(1-8, 10, 12), 2014: 46(1-10, 12), 2015: 47(3-12), 2016: 48(1-12), 2017: 49(1-12), 2018: 50(1-12), 2019: 51(1-12), 2020: 52(1-12), 2021: 53(1-12), 2022: 54(1-12), 2023: 55(1-14), 2024: 56(1-3)
|
|
|
LOCKSS Archive
|
|
In Progress
|
2026-02-09
|
|
|
43, 44, 51
|
|
|
LOCKSS Archive
|
|
Preserved
|
2026-02-09
|
|
|
45 to 50
|
|
|
National Digital Preservation Program, China
|
|
Preserved
|
2025-10-23
|
|
|
Preserved : 3 (1 to 5, 7, 11); 4 (1, 2, 5, 7 to 9, 11, 13, 14); 5 (1 to 9, 11, 12); 29 (1 to 9, 11); 31 (1 to 5, 8, 9, 11, 12); 32 (1 to 4, 6, 9, 11, 12); 33 (1 to 4, 6, 7, 11, 12); 34 (1, 4, 5, 7 to 9, 11, 12); 35 (1 to 4, 6 to 9, 11 to 15); 36 (1, 4 to 9, 11 to 15); 37 (1, 4 to 9, 11 to 13); 38 (1, 4, 7 to 9, 12, 15); 39 (1 to 4, 7 to 9, 12, 14, 15); 41 (1 to 9, 11, 14); 42 (1 to 6, 8, 9, 11, 14); 43 (1, 6, 11); 44 (1, 3, 6, 8, 12, 14, 15); 45 (1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11, 12); 54 (1 to 9, 11, 12); 55 (1 to 9, 11 to 14); 56 (1 to 9, 11, 12)
|
|
|
National Digital Preservation Program, China
|
|
Preserved
|
2025-12-04
|
|
|
Preserved : 3 (1 to 5, 7, 11); 4 (1, 2, 5, 7 to 9, 11, 13, 14); 5 (1 to 9, 11, 12); 29 (1 to 9, 11); 31 (1 to 5, 8, 9, 11, 12); 32 (1 to 4, 6, 9, 11, 12); 33 (1 to 4, 6, 7, 11, 12); 34 (1, 4, 5, 7 to 9, 11, 12); 35 (1 to 4, 6 to 9, 11 to 15); 36 (1, 4 to 9, 11 to 15); 37 (1, 4 to 9, 11 to 13); 38 (1, 4, 7 to 9, 12, 15); 39 (1 to 4, 7 to 9, 12, 14, 15); 41 (1 to 9, 11, 14); 42 (1 to 6, 8, 9, 11, 14); 43 (1, 6, 11); 44 (1, 3, 6, 8, 12, 14, 15); 45 (1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11, 12); 54 (1 to 9, 11, 12); 55 (1 to 9, 11 to 14); 56 (1 to 9, 11, 12)
|
|
|
Scholars Portal
|
|
Preserved
|
2025-09-02
|
|
|
Preserved : 56 (4 to 12); 57 (, 1 to 6); 2024; 2025
|
|
|
Library of Congress
|
|
Preserved
|
2025-04-07
|
|
|
49 (10, 11); 50 (2 to 12); 51 (1 to 12); 52 (1 to 12); 53 (1 to 12); 54 (1 to 12); 55 (1 to 14); 56 (1 to 11); 57 (1)
|
|
|
National Library of the Netherlands
|
|
Preserved
|
2024-12-15
|
|
|
Preserved : 29 (1-11); 30 (1-5, 7, 11); 31 (1-5, 8, 9, 11, 12); 32 (1-4, 6, 9-12); 33 (1-4, 6, 7, 11, 12); 34 (1, 4, 5, 7-12); 35 (1-4, 6-15); 36 (1, 4-15); 37 (1-3, 4-12, 13-15); 38 (1-3, 4-6, 7, 8, 9-11); 39 (2, 3, 4-6, 7-9, 10-11, 12-13, 14, 15); 40 (1, 2-4, 5-6, 7-10, 11-12, 13, 14-15); 41 (1-10, 11-13, 14-15); 42 (1-5, 6-7, 8, 9-10, 11-13, 14-15); 43 (1-5, 6-10, 11-15); 44 (1-2, 3-5, 6-7, 8-9, 10-11, 12-13, 14, 15); 45 (1-12); 46 (1-12); 47 (1-12); 48 (1-12); 49 (1-12); 50 (1-12); 51 (1-10)
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