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Internet Archive
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Preserved
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2025-08-08
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7 to 48
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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 to 6); 2 (, 1 to 6); 3 (, 1 to 6); 4 (, 1 to 6); 5 (, 1 to 6); 6 (, 1 to 6); 7 (, 1 to 9); 8 (, 1 to 9); 9 (, 1 to 10); 10 (, 1-2, 3 to 12); 11 (, 1 to 12); 12 (, 1 to 12); 13 (, 1 to 12); 14 (, 1 to 12); 15 (, 1 to 13); 16 (, 1 to 12); 17 (, 1 to 12); 18 (, 1 to 12); 19 (, 1 to 6, 7-12, 13 to 16); 20 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 21 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-16, 17-18, 19-20); 22 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 23 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-20); 24 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 25 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 26 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 27 (, 1-2, 3-4, 5-8, 9-10, 11-12, 13-14, 15-17, 18-20); 28 (, 1-2, 3-5, 6-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 29 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-14, 15-16, 17-18, 19-20); 30 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 31 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-14, 15-16, 17-18, 19-20); 32 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 33 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-18, 19-20); 34 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 35 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 36 (, 1-3, 4-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 37 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-20); 38 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 39 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 40 (, 1-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20, 21-22); 41 (, 1 to 22); 42 (, 1 to 22); 43 (, 1-2, 3 to 7, 17 to 22); 44 (, 1-4, 5 to 22); 45 (, 1 to 22); 46 (, 1 to 13, 16 to 22); 47 (, 1 to 3, 6 to 12, 13-14, 15 to 22); 48 (, 1 to 14, 19, 22); 49 (, 1 to 22); 50 (, 1 to 22); 51 (, 1 to 22); 52 (, 1 to 22); 53 (, 1 to 22); 54 (, 1 to 22); 55 (, 1 to 22); 56 (, 1 to 17); 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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Portico
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Preserved
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2026-02-12
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Preserved : 1970: 1(1-6), 1971: 2(1-6), 1972: 3(1-6), 1973: 4(1-6), 1974: 5(1-6), 1975: 6(1-6), 1976: 7(1-9), 1977: 8(1-9), 1978: 9(1-10), 1979: 10(1-12), 1980: 11(1-12), 1981: 12(1-12), 1982: 13(1-12), 1983: 14(1-12), 1984: 15(1-13), 1985: 16(1-12), 1986: 17(1-12), 1987: 18(1-12), 1988: 19(1-16), 1989: 20(1-20), 1990: 21(1-20), 1991: 22(1-20), 1992: 23(1-20), 1993: 24(1-20), 1994: 25(1-20), 1995: 26(1-20), 1996: 27(1-20), 1997: 28(1-20), 1998: 29(1-20), 1999: 30(1-20), 2000: 31(1-20), 2001: 32(1-20), 2002: 33(1-20), 2003: 34(1-20), 2004: 35(1-20), 2005: 36(1-20), 2006: 37(1-20), 2007: 38(1-20), 2008: 39(1-20), 2009: 40(1-22), 2010: 41(1-22), 2011: 42(1-22), 2012: 43(1-22), 2013: 44(1-22), 2014: 45(1-22), 2015: 46(1-22), 2016: 47(1-22), 2017: 48(1-22), 2018: 49(1-22), 2019: 50(1-22), 2020: 51(1-22), 2021: 52(1-22), 2022: 53(1-22), 2023: 54(1-22), 2024: 55(1-22), 2025: 56(1-22), 2026: 57(1-5)
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 55
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CLOCKSS Archive
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Preserved
|
2026-02-09
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ahead-of-print to 57
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LOCKSS Archive
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In Progress
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2026-02-09
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56
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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 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12, 13-14, 15-16, 17-18, 19-2); 4 (1-6, 7-8, 9-1, 11-12, 13-14, 15-16, 17-18, 19-2, 21-22); 5 (1 to 9, 11 to 19, 21, 22); 28 (1-2, 3-5, 6-8, 9-1, 11-12, 13-14, 15-16, 17-18, 19-2); 29 (1-2, 3-4, 5-6, 7-8, 9-1, 11-14, 15-16, 17-18, 19-2); 31 (1-2, 3-4, 5-6, 7-8, 9-1, 11-14, 15-16, 17-18, 19-2); 32 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12, 13-14, 15-16, 17-18, 19-2); 33 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12, 13-14, 15-18, 19-2); 34 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12, 13-14, 15-16, 17-18, 19-2); 35 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12, 13-14, 15-16, 17-18, 19-2); 36 (1-3, 4-6, 7-8, 9-1, 11-12, 13-14, 15-16, 17-18, 19-2); 37 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12, 13-14, 15-2); 38 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12, 13-14, 15-16, 17-18, 19-2); 39 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12, 13-14, 15-16, 17-18, 19-2); 41 (1 to 9, 11 to 19, 21, 22); 42 (1 to 9, 11 to 19, 21, 22); 43 (1-2, 2 to 9, 11 to 19, 21, 22); 44 (1-4, 2, 5 to 9, 11 to 19, 21, 22); 45 (1 to 9, 11 to 19, 21, 22); 46 (sup1, 1 to 9, 11 to 19, 21, 22); 47 (sup1, 1 to 9, 11, 12, 13-14, 15 to 19, 21, 22); 48 (1 to 9, 11 to 19, 21, 22); 49 (1 to 9, 11 to 19, 21, 22); 51 (1 to 9, 11 to 19, 21, 22); 52 (1 to 9, 11 to 19, 21, 22); 53 (1 to 9, 11 to 19, 21, 22); 54 (1 to 9, 11 to 19, 21, 22); 55 (1 to 9, 11 to 19, 21, 22); 56 (1 to 7)
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National Library of the Netherlands
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Preserved
|
2024-12-15
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Preserved : 1 (1-6); 2 (1-6); 3 (1-6); 4 (1-6); 5 (1-6); 6 (1-6); 7 (1-9); 8 (1-9); 9 (1-10); 10 (1-2, 3-12); 11 (1-12); 12 (1-12); 13 (1-12); 14 (1-12); 15 (1-13); 16 (1-12); 17 (1-12); 18 (1-12); 19 (1-6, 7-12, 13-16); 20 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 21 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-16, 17-18, 19-20); 22 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 23 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-20); 24 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 25 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 26 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 27 (1-2, 3-4, 5-8, 9-10, 11-12, 13-14, 15-17, 18-20); 28 (1-2, 3-5, 6-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 29 (1-2, 3-4, 5-6, 7-8, 9-10, 11-14, 15-16, 17-18, 19-20); 30 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 31 (1-2, 3-4, 5-6, 7-8, 9-10, 11-14, 15-16, 17-18, 19-20); 32 (3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 19-20); 33 (1-2, 3-4, 9-10, 11-12, 15-18); 34 (1-2, 5-6, 7-8, 9-10, 15-16, 19-20); 35 (1-2, 3-4, 7-8, 9-10, 11-12, 15-16, 17-18, 19-20); 36 (1-3, 4-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 37 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-20); 38 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20); 39 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19-20)
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Library of Congress
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Preserved
|
2025-04-07
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41 (1 to 22); 42 (1 to 22); 43 (1-2, 3 to 22); 44 (1-4, 5 to 22); 45 (1 to 22); 46 (sup1, 1 to 22); 47 (sup1, 1 to 13-14, 15 to 22); 48 (1 to 22); 49 (1 to 22); 50 (1 to 9, 11 to 22); 51 (1 to 22); 52 (1 to 22); 53 (1 to 22); 54 (1 to 22); 55 (1 to 22)
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