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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1/2, 3/4); 2 (, 1/2, 3, 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 (, 2, 3); 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 (, 1/2, 3/4); 29 (, 1/2, 3/4); 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 4); 40 (, 1 to 6); 41 (, 1 to 6); 42 (, 1 to 5); 43 (, 1 to 8); 44 (, 1 to 8); 45 (, 1 to 8); 46 (, 1, 3 to 8); 47 (, 1 to 8); 48 (, 1 to 8); 49 (, 1, 2, 4 to 8); 50 (, 1 to 5); 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; 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 34
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LOCKSS Archive
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Preserved
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2026-02-09
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35 to 37
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CLOCKSS Archive
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Preserved
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2026-02-09
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35 to 40
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Portico
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Preserved
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2026-02-12
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Preserved : 1974: 1(1-4), 1975: 2(1-4), 1976: 3(1-4), 1977: 4(1-4), 1978: 5(1-4), 1979: 6(1-4), 1980: 7(1-4), 1981: 8(1-4), 1982: 9(1-4), 1983: 10(1-4), 1984: 11(1-4), 1985: 12(1-4), 1986: 13(1-4), 1987: 14(1-4), 1988: 15(1-4), 1989: 16(1-4), 1990: 17(1-4), 1991: 18(1-4), 1992: 19(1-4), 1993: 20(1-4), 1994: 21(1-4), 1995: 22(1-4), 1996: 23(1-4), 1997: 24(1-4), 1998: 25(1-4), 1999: 26(1-4), 2000: 27(1-4), 2001: 28(1-4), 2004: 29(1-4), 2005: 30(1-4), 2006: 31(1-4), 2007: 32(1-4), 2008: 33(1-4), 2009: 34(1-4), 2010: 35(1-4), 2011: 36(1-4), 2012: 37(1-4), 2013: 38(1-4), 2014: 39(1-4), 2015: 40(1-6)
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 49
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CLOCKSS Archive
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Preserved
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2026-02-09
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ahead-of-print to 50
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LOCKSS Archive
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In Progress
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2026-02-09
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50
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Portico
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Preserved
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2026-02-12
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Preserved : 2015: 40(1-6), 2016: 41(1-6), 2017: 42(1-6), 2018: 43(1-8), 2019: 44(1-8), 2020: 45(1-8), 2021: 46(1-8), 2022: 47(1-8), 2023: 48(1-8), 2024: 49(1-8), 2025: 50(1-8), 2026: 51(1)
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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 : 42 (2 to 6); 43 (1 to 4)
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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 : 42 (2 to 6); 43 (1 to 4)
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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 4); 4 (1 to 6); 5 (1, 2, 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1-2, 3-4); 29 (1-2, 3-4); 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 6); 42 (1 to 6); 43 (sup1, 1 to 8); 44 (1 to 8); 45 (sup1, 1 to 8); 46 (1 to 8); 47 (1 to 8); 48 (1 to 8); 49 (1 to 8)
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Library of Congress
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Preserved
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2025-04-07
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41 (2); 42 (2 to 6); 43 (sup1, 1 to 8); 44 (1 to 8); 45 (sup1, 1 to 8); 46 (1 to 8); 47 (1 to 8); 48 (1 to 8); 49 (1 to 8); 50 (2)
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