Scholars Portal
1972-2025
Preserved
2026-03-19
Preserved : 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, 2); 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); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 3); 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)
Internet Archive
1980-1989
Preserved
2025-08-08
11 to 15
CLOCKSS Archive
2010-2015
Preserved
2026-04-06
32 to 37
LOCKSS Archive
2012-2012
Preserved
2026-04-06
34
Portico
1972-2015
Preserved
2026-04-09
Preserved : 1972/1973: 7(1-4), 1974/1975: 8(1-4), 1976/1977: 9(1-4), 1978/1979: 10(1-4), 1980/1981: 11(1-4), 1982/1983: 12(1-4), 1984/1985: 13(1-4), 1986/1987: 14(1-4), 1988/1989: 15(1-4), 1990/1991: 16(1-4), 1992/1993: 17(1-4), 1994/1995: 18(1-4), 1996/1997: 19(1-4), 1998: 20(1-2), 1999: 21(1-4), 2000: 22(1-4), 2001: 23(1-4), 2002: 24(1-4), 2003: 25(1-4), 2004: 26(1-4), 2005: 27(1-4), 2006: 28(1-4), 2007: 29(1-4), 2008: 30(1-4), 2009: 31(1-4), 2010: 32(1-4), 2011: 33(1-4), 2012: 34(1-4), 2013: 35(1-4), 2014: 36(1-4), 2015: 37(1-3)
LOCKSS Archive
1972-2024
Preserved
2026-04-06
7 to 46
CLOCKSS Archive
1972-2025
Preserved
2026-04-06
ahead-of-print, 7 to 47
LOCKSS Archive
2025-2025
In Progress
2026-04-06
47
Portico
1972-2025
Preserved
2026-04-09
Preserved : 1972/1973: 7(1-4), 1974/1975: 8(1-4), 1976/1977: 9(1-4), 1978/1979: 10(1-4), 1980/1981: 11(1-4), 1982/1983: 12(1-4), 1984/1985: 13(1-4), 1986/1987: 14(1-4), 1988/1989: 15(1-4), 1990/1991: 16(1-4), 1992/1993: 17(1-4), 1994/1995: 18(1-4), 1996/1997: 19(1-4), 1998: 20(1-2), 1999: 21(1-4), 2000: 22(1-4), 2001: 23(1-4), 2002: 24(1-4), 2003: 25(1-4), 2004: 26(1-4), 2005: 27(1-4), 2006: 28(1-4), 2007: 29(1-4), 2008: 30(1-4), 2009: 31(1-4), 2010: 32(1-4), 2011: 33(1-4), 2012: 34(1-4), 2013: 35(1-4), 2014: 36(1-4), 2015: 37(1-4), 2016: 38(1-4), 2017: 39(1-4), 2018: 40(1-4), 2019: 41(1-4), 2020: 42(1-4), 2021: 43(1-4), 2022: 44(1-4), 2023: 45(1-4), 2024: 46(1-4), 2025: 47(1-4)
National Digital Preservation Program, China
2006-2022
Preserved
2025-12-04
Preserved : ; 3 (1 to 4); 4 (1 to 4); 26 (2); 28 (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, 2)
Library of Congress
2017-2024
Preserved
2025-04-07
33 (4); 39 (2 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, 2)