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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 6); 8 (, 1 to 6); 9 (, 1 to 6); 10 (, 1 to 6); 11 (, 1 to 6); 12 (, 1 to 6); 13 (, 1 to 6); 14 (, 1 to 6); 15 (, 1 to 6); 16 (, 1 to 6); 17 (, 1 to 6); 18 (, 1 to 6); 19 (, 1 to 6); 20 (, 1 to 6); 26 (, 1 to 6); 27 (, 1 to 6); 28 (, 1 to 6); 29 (, 1 to 6); 30 (, 1 to 6); 31 (, 1 to 6); 32 (, 1 to 6); 33 (, 1 to 6); 34 (, 1 to 6); 35 (, 1 to 6); 36 (, 1 to 6); 37 (, 1 to 6); 38 (, 1 to 6); 39 (, 1 to 6); 40 (, 1 to 6); 41 (, 1 to 6); 42 (, 1 to 6); 43 (, 1 to 6); 44 (, 1 to 6); 45 (, 1 to 6); 46 (, 1 to 6); 47 (, 1 to 6); 48 (, 1 to 6); 49 (, 1 to 6); 50 (, 1 to 6); 51 (, 1 to 6); 52 (, 1 to 6); 53 (, 1, 2, 4 to 6); 54 (, 1 to 6); 55 (, 1 to 4); 56 (, 1 to 4); 57 (, 1, 3, 4); 58 (, 1 to 4); 59 (, 1 to 4); 60 (, 1 to 4); 61 (, 1 to 4); 62 (, 1 to 4); 63 (, 1 to 4); 64 (, 1, 3, 4); 65 (, 1 to 3); 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 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
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Internet Archive
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Preserved
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2025-08-08
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1 to 55
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 65
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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 66
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LOCKSS Archive
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In Progress
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2026-02-09
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66
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Portico
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Preserved
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2026-02-12
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Preserved : 1978: 19(1-6), 1979: 20(1-6), 1980: 21(1-6), 1981: 22(1-6), 1982: 23(1-6), 1983: 24(1-6), 1984: 25(1-6), 1985: 26(1-6), 1986: 27(1-6), 1987: 28(1-6), 1988: 29(1-6), 1989: 30(1-6), 1990: 31(1-6), 1991: 32(1-6), 1992: 33(1-6), 1993: 34(1-6), 1994: 35(1-6), 1995: 36(1-6), 1996: 37(1-6), 1997: 38(1-6), 1998: 39(1-6), 1999: 40(1-6), 2000: 41(1-6), 2001: 42(1-6), 2002: 43(1-6), 2003: 44(1-6), 2004: 45(1-6), 2005: 46(1-6), 2006: 47(1-6), 2007: 48(1-6), 2008: 49(1-6), 2009: 50(1-6), 2010: 51(1-6), 2011: 52(1-6), 2012: 53(1-6), 2013: 54(1-6), 2014: 55(1-4), 2015: 56(1-4), 2016: 57(1-4), 2017: 58(1-4), 2018: 59(1-4), 2019: 60(1-4), 2020: 61(1-4), 2021: 62(1-4), 2022: 63(1-4), 2023: 64(1-4), 2024: 65(1-4), 2025: 66(1-4)
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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 : 4 (2 to 6); 5 (1 to 6); 6 (1 to 4); 38 (1 to 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1)
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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 : 1 (1-6); 2 (1-6); 3 (1-6); 4 (1-6); 5 (1-6); 6 (1-6); 7 (1-6); 8 (1-6); 9 (1-6); 10 (1-6); 11 (1-6); 12 (1-6); 13 (1-6); 14 (1-6); 15 (1-6); 16 (1-6); 17 (1-6); 18 (1-6); 19 (1-6); 20 (1-6); 21 (1-6); 22 (1-6); 23 (1-6); 24 (1-6); 25 (1-6); 26 (1-6); 27 (1-6); 28 (1-6); 29 (1-6); 30 (1-6); 31 (1-6); 32 (1-6); 33 (1-6); 34 (1-6); 35 (1-6); 36 (1-6); 37 (1-6); 38 (1-6); 39 (1-6); 40 (1-6); 41 (1-6); 42 (1-6); 43 (1-6); 44 (1-6); 45 (1-6); 46 (1-6); 47 (1-6); 48 (1-6); 49 (1-6)
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Library of Congress
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Preserved
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2025-04-07
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51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 60 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1)
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