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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 12); 2 (, 1 to 12); 3 (, 1 to 12); 4 (, 1 to 12); 5 (, 1 to 12); 6 (, 1 to 12); 7 (, 1 to 12); 8 (, 1 to 12); 9 (, 1 to 12); 10 (, 1 to 12); 11 (, 1 to 12); 12 (, 1 to 12); 13 (, 1 to 12); 14 (, 1 to 12); 15 (, 1 to 12); 16 (, 1 to 12); 17 (, 1 to 12); 18 (, 1 to 12); 19 (, 1 to 12); 20 (, 1 to 12); 21 (, 1 to 12); 22 (, 1 to 12); 23 (, 1 to 12); 24 (, 1 to 12); 25 (, 1 to 12); 26 (, 1 to 12); 27 (, 1 to 12); 28 (, 1 to 12); 29 (, 1 to 12); 30 (, 1 to 12); 31 (, 1 to 12); 32 (, 1 to 6); 33 (, 1 to 6); 34 (, 1 to 8, 9-10, 11, 12); 35 (, 1 to 12); 36 (, 1 to 8, 9-10, 11-12); 37 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 38 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 39 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 40 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 41 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 42 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 43 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 44 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 45 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 46 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 47 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 48 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 49 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 50 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 51 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 52 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 53 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 54 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 55 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 56 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 57 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 58 (, 1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 59 (, 1-2, 3-4, 5-6, 7-8); 1965; 1966; 1967; 1968; 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
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Internet Archive
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Preserved
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2025-08-08
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to 12
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LOCKSS Archive
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In Progress
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2026-02-09
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 59
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Portico
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Preserved
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2026-02-12
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Preserved : 1966: 2(5), 1967: 3(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1972: 8(11-12)
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Portico
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Preserved
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2026-02-12
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Preserved : 1974: 10(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1975: 11(5)
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Portico
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Preserved
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2026-02-12
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Preserved : 1982: 18(8)
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Portico
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Preserved
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2026-02-12
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Preserved : 1989: 25(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 26(5)
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Portico
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Preserved
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2026-02-12
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Preserved : 1993: 29(12), 1994: 30(9)
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Portico
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Preserved
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2026-02-12
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Preserved : 1995: 31(12), 1996: 32(5), 1997: 33(1-6), 1998: 34(1-12), 1999: 35(1-12), 2000: 36(1-7, 9-12), 2001: 37(1-12), 2002: 38(1-12), 2003: 39(1-12), 2004: 40(1-12), 2005: 41(1-12), 2006: 42(1-12), 2007: 43(1-12), 2008: 44(1-12), 2009: 45(1-12), 2010: 46(1-8), 2011: 47(1-8), 2012/2013: 48(1-4, 7-12), 2013/2014: 49(1-12), 2014/2015: 50(1-8, 11-12), 2015/2016: 51(1-12), 2016/2017: 52(1-12), 2017/2018: 53(1-12), 2018/2019: 54(1-12), 2019/2020: 55(1-12), 2020/2021: 56(1-12), 2021/2022: 57(1-12), 2022/2023: 58(1-12), 2023: 59(1-8)
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Library of Congress
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Preserved
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2025-04-07
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53 (11-12); 54 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 55 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 56 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 57 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 58 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 59 (1-2, 3-4, 5-6, 7-8)
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : 4 (1, 3, 5, 7, 9, 11); 5 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 33 (1 to 6); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 7, 9, 11); 37 (1, 3, 5, 7, 9, 11); 38 (1, 3, 5, 7, 9, 11); 39 (1, 3, 5, 7, 9, 11); 41 (1, 3, 5, 7, 9, 11); 42 (1, 3, 5, 7, 9, 11); 43 (1, 3, 5, 7, 9, 11); 44 (1, 3, 5, 7, 9, 11); 45 (1, 3, 5, 7, 9, 11); 46 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 47 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 48 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 49 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 51 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 52 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 53 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 54 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 55 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 56 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 57 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 58 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 59 (1-2, 3-4)
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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 (1, 3, 5, 7, 9, 11); 5 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 33 (1 to 6); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 7, 9, 11); 37 (1, 3, 5, 7, 9, 11); 38 (1, 3, 5, 7, 9, 11); 39 (1, 3, 5, 7, 9, 11); 41 (1, 3, 5, 7, 9, 11); 42 (1, 3, 5, 7, 9, 11); 43 (1, 3, 5, 7, 9, 11); 44 (1, 3, 5, 7, 9, 11); 45 (1, 3, 5, 7, 9, 11); 46 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 47 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 48 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 49 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 51 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 52 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 53 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 54 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 55 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 56 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 57 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 58 (1-2, 3-4, 5-6, 7-8, 9-1, 11-12); 59 (1-2, 3-4)
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : 45 (11); 46 (1, 3, 5, 7, 9, 11); 47 (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 : 45 (11); 46 (1, 3, 5, 7, 9, 11); 47 (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 : 33 (5); 36 (8, 9, 11); 37 (1, 3, 5, 7, 9, 11); 38 (1, 3, 5, 7, 9, 11); 39 (1, 3, 5, 7, 9, 11-12); 40 (1, 3, 5, 7, 9-10, 11); 41 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 42 (1, 3-4, 5-6, 7-8, 9-10, 11-12); 43 (3-4, 5-6, 7-8, 9-10, 11-12); 44 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 45 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 46 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 47 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 48 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 49 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 50 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 51 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 52 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 53 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 54 (1-2, 3-4, 5-6, 7-8, 9-10, 11-12); 55 (1-2, 3-4)
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