Scholars Portal
1981-2025
Preserved
2025-09-02
Preserved : 2 (4); 6 (, 1 to 5); 7 (, 1 to 5); 8 (, 1 to 4, 5-6); 9 (, 1 to 4, 5-6); 10 (, 1 to 3, 4-5, 6); 11 (, 1 to 6); 12 (, 1, 2, 3-4, 5-6); 13 (, 1 to 6); 14 (, 1 to 6); 15 (, 1 to 6); 16 (, 1, 2, 3-4, 5 to 7); 17 (, 1 to 7); 18 (, 1 to 5, 6-7); 19 (, 1, 2-3, 4, 5, 6-7); 20 (, 1-2, 3 to 7); 21 (, 1 to 7); 22 (, 1, 2-3, 4 to 6); 23 (, 1-3, 4 to 6); 24 (, 1, 2, 3-4, 5, 6); 25 (, 1 to 6); 26 (, 1 to 6); 27 (, 1 to 8); 28 (, 1 to 8); 29 (, 1 to 10); 30 (, 1 to 10); 31 (, 1 to 12); 32 (, 1 to 12); 33 (, 1 to 3, 9 to 12); 34 (, 1 to 12); 35 (, 1 to 12); 36 (, 1 to 12); 37 (, 1 to 6, 9 to 12); 38 (, 1 to 12); 39 (, 3 to 12); 40 (, 1, 3 to 12); 41 (, 1 to 14); 42 (, 1 to 14); 43 (, 1 to 14); 44 (, 1 to 14); 45 (, 1 to 3, 5 to 14); 46 (, 1 to 10); 1981; 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
Internet Archive
1993-2001
Preserved
2025-08-08
14 to 22
Portico
1981-1984
Preserved
2026-02-12
Preserved : 1981: 2(1, 4), 1982: 3(1-4), 1983: 4(1-4), 1984: 5(1-2)
Portico
1985-1988
Preserved
2026-02-12
Preserved : 1985: 6(1-5), 1986: 7(1-5), 1987: 8(1-4), 1988: 9(1-4)
Portico
1989-1991
Preserved
2026-02-12
Preserved : 1989: 10(1-3, 6), 1990: 11(1-6), 1991: 12(1-2)
Portico
1992-2026
Preserved
2026-02-12
Preserved : 1992: 13(1-6), 1993: 14(1-6), 1994: 15(1-6), 1995: 16(1-2, 5-7), 1996: 17(1-7), 1997: 18(1-7), 1998: 19(1-7), 1999: 20(1-7), 2000: 21(1-7), 2001: 22(1, 4-6), 2002: 23(1-6), 2003: 24(1-6), 2004/2005: 25(1-6), 2005: 26(1-6), 2006: 27(1-8), 2007: 28(1-8), 2008: 29(1-10), 2009: 30(1-10), 2009/2010: 31(1-12), 2011: 32(1-12), 2012: 33(1-12), 2013: 34(1-12), 2014: 35(1-12), 2015: 36(1-12), 2016: 37(1-12), 2017: 38(1-12), 2018: 39(1-12), 2019: 40(1-12), 2020: 41(1-14), 2020/2021: 42(1-14), 2021/2022: 43(1-14), 2023: 44(1-14), 2023/2024: 45(1-14), 2024/2025: 46(1-14), 2026: 47(1-2)
LOCKSS Archive
1980-2024
Preserved
2026-02-09
1 to 45
CLOCKSS Archive
1980-2025
Preserved
2026-02-09
1 to 47
LOCKSS Archive
2025-2025
In Progress
2026-02-09
46
National Digital Preservation Program, China
1997-2025
Preserved
2025-12-04
Preserved : 2 (1-2, 3 to 7); 3 (1 to 9); 4 (1 to 9, 11, 12); 18 (1 to 5, 6-7); 19 (1, 2-3, 4, 5, 6-7); 21 (1 to 7); 22 (1, 2-3, 4 to 6); 23 (1-3, 4 to 6); 24 (1, 2, 3-4, 5, 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 8); 28 (1 to 8); 29 (1 to 9); 31 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 9, 11, 12); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11 to 14); 42 (1 to 9, 11 to 14); 43 (1 to 9, 11 to 14); 44 (1 to 9, 11 to 13); 45 (1 to 9, 11 to 14); 46 (1, 2)
National Library of the Netherlands
1963-2008
Preserved
2024-12-15
Preserved : 1 (1-4); 2 (1, 2-3, 4); 3 (1-4); 4 (1-4); 5 (1, 2, 3-4); 6 (1-5); 7 (1-5); 8 (1-4, 5-6); 9 (1-4, 5-6); 10 (1-3, 4-5, 6); 11 (1-6); 12 (1, 2, 3-4, 5-6); 13 (1-6); 14 (1-6); 15 (1-6); 16 (1, 2, 3-4, 5-7); 17 (1-7); 18 (1-5, 6-7); 19 (1, 2-3, 4, 5, 6-7); 20 (1-2, 3-7); 21 (1-7); 23 (1-3); 24 (5, 6); 25 (2); 26 (5); 27 (3-8); 28 (1-8); 29 (1-10)
Library of Congress
2010-2024
Preserved
2025-04-07
31 (2 to 12); 32 (1 to 12); 33 (1 to 9, 11, 12); 34 (1 to 12); 35 (1 to 12); 36 (1 to 12); 37 (1 to 12); 38 (1 to 12); 39 (1 to 12); 40 (1 to 12); 41 (1 to 14); 42 (1 to 14); 43 (1 to 14); 44 (1 to 14); 45 (1 to 14)