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