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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); 2 (, 1, 2); 3 (, 1, 2); 4 (, 1, 2); 5 (, 1, 2); 6 (, 1, 2); 7 (, 1, 2); 8 (, 1, 2); 9 (, 1, 2); 10 (, 1, 2); 11 (, 1, 2); 12 (, 1, 2); 13 (, 1, 2); 14 (, 1, 2); 15 (, 1, 2); 16 (, 1, 2); 17 (, 1, 2); 18 (, 1, 2); 19 (, 1, 2); 20 (, 1, 2); 21 (, 1, 2); 22 (, 1, 2); 23 (, 1, 2); 24 (, 1, 2); 25 (, 1, 2); 26 (, 1, 2); 27 (, 1, 2); 28 (, 1, 2); 29 (, 1, 2); 30 (, 1 to 3); 31 (, 1 to 3); 32 (, 1 to 3); 33 (, 1, 2, 3-4); 34 (, 1 to 4); 35 (, 1 to 4); 36 (, 1 to 5); 37 (, 1 to 6); 38 (, 1 to 6); 39 (, 1 to 7); 40 (, 1 to 7); 41 (, 1 to 7); 42 (, 1 to 4, 5-6, 7, 8); 43 (, 1 to 10); 44 (, 1 to 10); 45 (, 1 to 12); 46 (, 1 to 14); 47 (, 1 to 12, 13-14); 48 (, 1 to 14); 49 (, 1 to 14); 50 (, 1 to 5, 6-7, 8 to 14); 51 (, 1 to 14); 52 (, 1 to 14); 53 (, 1 to 14); 54 (, 1 to 14); 55 (, 1 to 14); 56 (, 1 to 14); 57 (, 1 to 10); 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; 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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9 to 36
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.29:1-2;vol.30:1-3;vol.31:1-3;vol.32:1-3;vol.33:1-2,3-4;vol.34:1-4;vol.35:1-4;vol.36:1-5;vol.37:1-6;vol.38:1-6;vol.39:1-7;vol.40:1-7;vol.41:1-7;vol.42:1-4,7-8,5-6;vol.43:1-10,sup.s1;vol.44:1-10,sup.s1,sup.s2
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Portico
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Preserved
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2026-02-12
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Preserved : 1969: 1(1-2), 1970: 2(1-2), 1971: 3(1-2), 1972: 4(1-2), 1973: 5(1-2), 1974: 6(1-2), 1975: 7(1-2), 1976: 8(1-2), 1977: 9(1-2), 1978: 10(1-2), 1979: 11(1-2), 1980: 12(1-2), 1981: 13(1-2), 1982: 14(1-2), 1983: 15(1-2), 1984: 16(1-2), 1985: 17(1-2), 1986: 18(1-2), 1987: 19(1-2), 1988: 20(1-2), 1989: 21(1-2), 1990: 22(1-2), 1991: 23(1-2), 1992: 24(1-2), 1993: 25(1-2), 1994: 26(1-2), 1995: 27(1-2), 1996: 28(1-2), 1997: 29(1-2), 1998: 30(1-3), 1999: 31(1-3), 2000: 32(1-3), 2001: 33(1-2), 2002: 34(1-4), 2003: 35(1-4), 2004: 36(1-5), 2005: 37(1-6), 2006: 38(1-6), 2007: 39(1-7), 2008: 40(1-7), 2009: 41(1-7), 2010: 42(1-8), 2011: 43(1-10), 2012: 44(1-10)
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CLOCKSS Archive
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Preserved
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2026-02-09
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23 to 44
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 56
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CLOCKSS Archive
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Preserved
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2026-02-09
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40 to 49
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LOCKSS Archive
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In Progress
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2026-02-09
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57
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Portico
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Preserved
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2026-02-12
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Preserved : 1969: 1(1-2), 1970: 2(1-2), 1971: 3(1-2), 1972: 4(1-2), 1973: 5(1-2), 1974: 6(1-2), 1975: 7(1-2), 1976: 8(1-2), 1977: 9(1-2), 1978: 10(1-2), 1979: 11(1-2), 1980: 12(1-2), 1981: 13(1-2), 1982: 14(1-2), 1983: 15(1-2), 1984: 16(1-2), 1985: 17(1-2), 1986: 18(1-2), 1987: 19(1-2), 1988: 20(1-2), 1989: 21(1-2), 1990: 22(1-2), 1991: 23(1-2), 1992: 24(1-2), 1993: 25(1-2), 1994: 26(1-2), 1995: 27(1-2), 1996: 28(1-2), 1997: 29(1-2), 1998: 30(1-3), 1999: 31(1-3), 2000: 32(1-3), 2001: 33(1-4), 2002: 34(1-4), 2003: 35(1-4), 2004: 36(1-5)
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Portico
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Preserved
|
2026-02-12
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Preserved : 2005: 37(1-6), 2006: 38(1-6), 2007: 39(1-7), 2008: 40(1-7), 2009: 41(1-7), 2010: 42(1-8), 2011: 43(1-10), 2012: 44(1-10), 2013: 45(1-12), 2014: 46(1-14), 2015: 47(1-14), 2016: 48(1-14), 2017: 49(1-14), 2018: 50(1-14), 2019: 51(1-14), 2020: 52(1-14), 1921/2020/2021: 53(1-14), 2021/2022: 54(1-14), 2023: 55(1-14), 2024: 56(1-14), 2025: 57(1-14), 2026: 58(1-2)
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CLOCKSS Archive
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Preserved
|
2026-02-09
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ahead-of-print to 58
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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 3); 4 (1 to 7); 5 (1 to 5, 6-7, 8, 9, 11 to 14); 29 (1, 2); 31 (1 to 3); 32 (1 to 3); 33 (1, 2, 3-4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 5); 37 (1 to 6); 38 (1 to 6); 39 (1 to 7); 41 (1 to 7); 42 (1 to 4, 5-6, 7, 8); 43 (sup1, 1 to 9); 44 (sup1, 1 to 9); 45 (1 to 6, 8, 9, 11, 12); 46 (1 to 9, 11 to 14); 47 (1 to 9, 11, 12, 13-14); 48 (1 to 9, 11 to 14); 49 (1 to 9, 11 to 14); 51 (1 to 9, 11 to 14); 52 (1 to 9, 11 to 14); 53 (1 to 9, 11 to 14); 54 (1 to 9, 11 to 14); 55 (1 to 9, 11 to 13); 56 (1 to 9, 11 to 14); 57 (1 to 3, 5)
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National Library of the Netherlands
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Preserved
|
2024-12-15
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Preserved : 38 (1-6); 39 (1-7)
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Library of Congress
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Preserved
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2025-04-07
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42 (1 to 5-6, 7, 8); 43 (sup1, 1 to 10); 44 (sup1, sup2, 1 to 10); 45 (1 to 6, 8 to 12); 46 (1 to 14); 47 (1 to 13-14); 48 (1 to 14); 49 (1 to 14); 50 (1 to 6-7, 8 to 14); 51 (1 to 9, 11 to 14); 52 (1 to 14); 53 (1 to 14); 54 (1 to 14); 55 (1 to 14); 56 (1 to 14)
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