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