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