Scholars Portal
1969-2025
Preserved
2025-09-02
Preserved : 1 (1 to 4); 2 (, 1 to 4); 3 (, 1 to 4); 4 (, 1 to 4); 5 (, 1 to 4); 6 (, 1 to 4); 7 (, 1 to 4); 8 (, 1 to 4); 9 (, 1 to 4); 10 (, 1 to 4); 11 (, 1 to 4); 12 (, 1 to 4); 13 (, 1 to 4); 14 (, 1 to 4); 15 (, 1 to 4); 16 (, 1 to 4); 17 (, 1 to 4); 18 (, 1 to 4); 19 (, 1 to 4); 20 (, 1 to 4); 21 (, 1 to 4); 22 (, 1 to 4); 23 (, 1 to 4); 24 (, 1 to 4); 25 (, 1 to 4); 26 (, 1 to 4); 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); 35 (, 1); 36 (, 2, 4); 37 (, 1 to 4); 38 (, 1 to 4); 39 (, 1 to 4); 40 (, 1 to 4); 41 (, 1 to 4); 42 (, 1 to 4); 43 (, 1 to 4); 44 (, 1 to 4); 45 (, 1 to 4); 46 (, 1 to 4); 47 (, 1 to 4); 48 (, 1 to 4); 49 (, 1 to 4); 50 (, 1 to 4); 51 (, 1 to 4); 52 (, 1 to 4); 53 (, 1 to 4); 54 (, 1 to 4); 55 (, 1 to 4); 56 (, 1 to 4); 57 (, 1, 2); 1969; 1970; 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; 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
1969-2007
Preserved
2025-08-08
1 to 39
Technische Informationsbibliothek
1997-2020
Preserved
2026-01-13
vol.29:1-4;vol.30:1-4;vol.31:1-4;vol.32:1-4;vol.33:1-4;vol.34:1-4;vol.35:1-4;vol.36:1-4;vol.37:1-4;vol.38:1-4;vol.39:1-4;vol.40:1-4;vol.41:1-4;vol.42:1-4;vol.43:1-4;vol.44:1-4;vol.45:1-4;vol.46:1-4;vol.47:1-4;vol.48:1-4;vol.49:1-4;vol.50:1-4;vol.51:1-4;vol.52:1-4
Portico
1969-2026
Preserved
2026-02-12
Preserved : 1969: 1(1-4), 1970: 2(1-4), 1971: 3(1-4), 1972: 4(1-4), 1973: 5(1-4), 1974: 6(1-4), 1975: 7(1-4), 1976: 8(1-4), 1977: 9(1-4), 1978: 10(1-4), 1979: 11(1-4), 1980: 12(1-4), 1981: 13(1-4), 1982: 14(1-4), 1983: 15(1-4), 1984: 16(1-4), 1985: 17(1-4), 1986: 18(1-4), 1987: 19(1-4), 1988: 20(1-4), 1989: 21(1-4), 1990: 22(1-4), 1991: 23(1-4), 1992: 24(1-4), 1993: 25(1-4), 1994: 26(1-4), 1995: 27(1-4), 1996: 28(1-4), 1997: 29(1-4), 1998: 30(1-4), 1999: 31(1-4), 2000: 32(1-4), 2001: 33(1-4), 2002: 34(1-4), 2003: 35(1-4), 2004: 36(1-4), 2005: 37(1-4), 2006: 38(1-4), 2007: 39(1-4), 2008: 40(1-4), 2009: 41(1-4), 2010: 42(1-4), 2011: 43(1-4), 2012: 44(1-4), 2013: 45(1-4), 2014: 46(1-4), 2015: 47(1-4), 2016: 48(1-4), 2017: 49(1-4), 2018: 50(1-4), 2019: 51(1-4), 2020: 52(1-4), 2021: 53(1-4), 2022: 54(1-4), 2023: 55(1-4), 2024: 56(1-4), 2025: 57(1-4), 2026: 58(1)
CLOCKSS Archive
1977-2026
Preserved
2026-02-09
9, 23 to 58
LOCKSS Archive
2002-2004
Preserved
2026-02-09
34 to 36
Portico
2002-2004
Preserved
2026-02-12
Preserved : 2002: 34(1-4), 2003: 35(1-4), 2004: 36(1-4)
National Digital Preservation Program, China
1997-2025
Preserved
2025-10-23
Preserved : 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 29 (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 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 3)
National Digital Preservation Program, China
1997-2025
Preserved
2025-12-04
Preserved : 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 29 (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 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4)
National Library of the Netherlands
2006-2007
Preserved
2024-12-15
Preserved : 38 (3, 4); 39 (1, 3, 4)
Library of Congress
2003-2024
Preserved
2025-04-07
31 (1); 35 (1); 47 (1 to 4); 48 (1 to 3); 49 (1, 4); 50 (2); 51 (1 to 3); 52 (1, 4); 53 (1 to 4); 54 (1 to 4); 55 (4); 56 (2)