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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, 2); 2 (, 1, 2); 3 (, 1, 2); 4 (, 1 to 4); 5 (, 1-2, 3-4); 6 (, 1, 2, 3-4); 7 (, 1 to 4); 8 (, 1 to 4); 9 (, 1-2, 3, 4); 10 (, 1, 2, 3-4); 11 (, 1 to 4); 12 (, 1, 2, 3-4); 13 (, 1 to 4); 14 (, 1, 2-3, 4); 15 (, 1, 2-3, 4); 16 (, 1 to 4); 17 (, 1 to 4); 18 (, 1 to 4); 19 (, 1 to 4); 20 (, 1 to 4); 21 (, 1 to 4); 22 (, 1 to 4); 23 (, 1 to 4); 24 (, 1 to 4); 25 (, 1 to 4); 26 (, 1 to 4); 27 (, 1 to 4); 28 (, 1 to 4); 29 (, 1 to 4); 30 (, 1 to 4); 31 (, 1 to 4); 32 (, 1 to 4); 33 (, 1 to 4); 34 (, 1 to 4); 35 (, 1 to 4); 36 (, 1 to 4); 37 (, 1 to 4); 38 (, 1 to 4); 39 (, 1 to 4); 40 (, 1 to 4); 41 (, 1 to 4); 42 (, 1 to 4); 43 (, 1 to 4); 44 (, 1 to 4); 45 (, 1 to 4); 46 (, 1 to 4); 47 (, 1 to 4); 48 (, 1 to 4); 49 (, 1 to 4); 50 (, 1 to 4); 51 (, 1 to 4); 52 (, 1 to 4); 53 (, 1 to 4); 54 (, 1 to 4); 55 (, 1 to 4); 56 (, 1 to 4); 57 (, 1 to 4); 58 (, 1 to 4); 59 (, 1 to 6); 60 (, 1 to 6); 61 (, 1 to 6); 62 (, 1 to 6); 63 (, 1 to 6); 64 (, 1 to 6); 65 (, 1 to 6); 66 (, 1 to 4); 1957; 1958; 1959; 1960; 1961; 1963; 1964; 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; 2025
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Internet Archive
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Preserved
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2025-08-08
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21 to 46
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 67
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Portico
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Preserved
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2026-02-12
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Preserved : 1957/1958: 1(1-2), 1959/1960: 2(1-2), 1961: 3(1-2), 1963: 4(1-4), 1964: 5(1-4), 1965: 6(1-4), 1966: 7(1-4), 1967: 8(1-4), 1968: 9(1-4), 1969: 10(1-4), 1970: 11(1-4), 1971: 12(1-4), 1972: 13(1-4), 1973: 14(1-4), 1974: 15(1-4), 1975: 16(1-4), 1976: 17(1-4), 1977: 18(1-4), 1978: 19(1-4), 1979: 20(1-4), 1980: 21(1-4), 1981: 22(1-4), 1982: 23(1-4), 1983: 24(1-4), 1984: 25(1-4), 1985: 26(1-4), 1986: 27(1-4), 1987: 28(1-4), 1988: 29(1-4), 1989: 30(1-4), 1990: 31(1-4), 1991: 32(1-4), 1992: 33(1-4), 1993: 34(1-4), 1994: 35(1-4), 1995: 36(1-4), 1996: 37(1-4), 1997: 38(1-4), 1998: 39(1-4), 1999: 40(1-4), 2000: 41(1-4), 2001: 42(1-4), 2002: 43(1-3), 2003: 44(1-4), 2004: 45(1-4), 2005: 46(1-4), 2006: 47(1-4), 2007: 48(1-4), 2008: 49(1-4), 2009: 50(1-4), 2010: 51(1-4), 2011: 52(1-4), 2012: 53(1-4), 2013: 54(1-4), 2014: 55(1-4), 2015: 56(2-4), 2016: 57(1-4), 2017: 58(1-4), 2018: 59(1-6), 2019: 60(1-6), 2019/2020: 61(1-6), 2021: 62(1-6), 2022: 63(1-6), 2023: 64(2-6), 2024: 65(1-6), 2025: 66(1, 3-6), 2026: 67(1)
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LOCKSS Archive
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In Progress
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2026-02-09
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53, 60
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LOCKSS Archive
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Preserved
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2026-02-09
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54 to 59
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Library of Congress
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Preserved
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2025-04-07
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59 (2 to 6); 60 (1 to 6); 61 (1 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 5)
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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 4); 5 (1 to 4); 6 (1 to 6); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 6); 61 (1 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 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 4); 5 (1 to 4); 6 (1 to 6); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 6); 61 (1 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 6)
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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 : 38 (3); 40 (1); 43 (4); 44 (1-4); 45 (1-4); 46 (1-4); 47 (1-4); 48 (1-4); 49 (1-4); 50 (1-4); 51 (1-4); 52 (1-4); 53 (1-4); 54 (1-4); 55 (1-4); 56 (1-4); 57 (1-4); 58 (1-4); 59 (1-6); 60 (1-5)
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