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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 4); 3 (, 1 to 4); 4 (, 1); 5 (, 1 to 4); 6 (, 1); 7 (, 1 to 4); 8 (, 1, 2, 3/4); 9 (, 1 to 4); 10 (, 1 to 4); 11 (, 1 to 4); 12 (, 1 to 4); 13 (, 1 to 4); 14 (, 1 to 4); 15 (, 1 to 4); 16 (, 1 to 4); 17 (, 1 to 4); 18 (, 1); 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, 2/3, 4); 26 (, 1 to 4); 27 (, 1 to 4); 28 (, 1 to 4); 29 (, 1 to 4); 30 (, 1 to 4); 31 (, 1); 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 6); 39 (, 1/2, 3 to 6); 40 (, 1, 2, 3/5, 6); 41 (, 1/2, 3/4, 5, 6); 42 (, 1/3, 4 to 6); 43 (, 1, 2/3, 4, 5/6); 44 (, 1, 2/3, 4, 5/6); 45 (, 1, 2, 3/4, 5/6); 46 (, 1/2, 3/4, 5, 6); 47 (, 1/2, 3/4, 5, 6); 48 (, 1/2, 3, 5, 6); 49 (, 1/2, 3/4, 5, 6); 50 (, 1, 2, 3/4, 5/6); 51 (, 1, 2/3, 4, 5/6); 52 (, 1, 3/4, 5, 6); 53 (, 1 to 4, 5/6); 54 (, 1, 2, 3/4, 5/6); 55 (, 1, 2/3, 4, 5/6); 56 (, 1, 2/3, 4, 5/6); 57 (, 1/2, 3/4, 5/6); 58 (, 1 to 6); 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, 2, 4, 5); 67 (, 1, 3 to 6); 68 (, 1 to 6); 69 (, 1, 3 to 6); 70 (, 2 to 6); 71 (, 1 to 3); 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 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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34 to 57
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 71
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Portico
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Preserved
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2026-02-12
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Preserved : 1955: 1(1-4), 1956: 2(1-4), 1957: 3(1-4), 1958: 4(1), 1959: 5(1-4), 1960: 6(1), 1961/1962: 7(1-4), 1962/1963: 8(1-4), 1963: 9(1-4), 1964: 10(1-4), 1965: 11(1-4), 1966: 12(1-4), 1967: 13(1-4), 1968: 14(1-4), 1969: 15(1-4), 1970: 16(1-4), 1971: 17(1-4), 1972: 18(1), 1973: 19(1-4), 1974: 20(1-4), 1975: 21(1-4), 1976: 22(1-4), 1977: 23(1-4), 1978: 24(1-4), 1979: 25(1-4), 1980: 26(1-4), 1981: 27(1-4), 1982: 28(1-4), 1983: 29(1-4), 1984/1985: 30(1-4), 1985: 31(1), 1986: 32(1-4), 1987: 33(1-4), 1988: 34(1-4), 1989: 35(1-4), 1990: 36(1-4), 1991: 37(1-4), 1992: 38(1-6), 1993: 39(1-6), 1994: 40(1-6), 1995: 41(1-6), 1996: 42(1-6), 1997: 43(1-6), 1998: 44(1-6), 1999: 45(1-6), 2000: 46(1-6), 2001: 47(1-6), 2002: 48(1-6), 2003: 49(1-6), 2004: 50(1-6), 2005: 51(1-6), 2006/2007: 52(1-6), 2007: 53(1-6), 2008: 54(1-6), 2009: 55(1-6), 2010: 56(1-6), 2011: 57(1-6), 2012: 58(1-6), 2013: 59(1-6), 2014: 60(1-6), 2015: 61(1-6), 2016: 62(1-6), 2017: 63(1-6), 2018: 64(1-6), 2019: 65(1-6), 2020: 66(1-6), 2021: 67(1-6), 2022: 68(1-6), 2023: 69(1-6), 2024: 70(1-4, 6), 2025: 71(2-4)
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LOCKSS Archive
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In Progress
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2026-02-09
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58, 65
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LOCKSS Archive
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Preserved
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2026-02-09
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59 to 64
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Library of Congress
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Preserved
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2025-04-07
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64 (2 to 6); 65 (1 to 6); 66 (1, 2-3, 4, 5-6); 67 (1-2, 3 to 6); 68 (1 to 6); 69 (1-2, 3 to 6); 70 (1 to 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 : 5 (1 to 3, 5); 6 (1 to 6); 7 (1 to 6); 43 (1, 2, 4, 5); 44 (1, 2, 4, 5); 45 (1 to 3, 5); 46 (1, 3, 5, 6); 47 (1, 3, 5, 6); 48 (1, 3, 5, 6); 49 (1, 3, 5, 6); 51 (1, 2, 4, 5); 52 (1, 3, 5, 6); 53 (1 to 5); 54 (1 to 3, 5); 55 (1, 2, 4, 5); 56 (1, 2, 4, 5); 57 (1, 3); 58 (1 to 6); 59 (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, 2-3, 4); 67 (1-2, 3 to 6); 68 (1 to 6); 69 (1-2, 3 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 : 5 (1 to 3, 5); 6 (1 to 6); 7 (1 to 6); 43 (1, 2, 4, 5); 44 (1, 2, 4, 5); 45 (1 to 3, 5); 46 (1, 3, 5, 6); 47 (1, 3, 5, 6); 48 (1, 3, 5, 6); 49 (1, 3, 5, 6); 51 (1, 2, 4, 5); 52 (1, 3, 5, 6); 53 (1 to 5); 54 (1 to 3, 5); 55 (1, 2, 4, 5); 56 (1, 2, 4, 5); 57 (1, 3); 58 (1 to 6); 59 (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, 2-3, 4); 67 (1-2, 3 to 6); 68 (1 to 6); 69 (1-2, 3 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 : 27 (1); 43 (2, 4, 5); 44 (1, 2, 4, 5); 45 (1-3, 5); 46 (1, 3, 5, 6); 47 (1, 3, 5, 6); 48 (1, 3, 5, 6); 49 (1, 3, 5, 6); 50 (1-3, 5-6); 51 (1, 2-3, 4, 5-6); 52 (1, 3-4, 5, 6); 53 (3, 4, 5-6); 54 (1, 2, 3-4, 5-6); 55 (1, 2-3, 4, 5-6); 56 (1, 2-3, 4, 5-6); 57 (1-2, 3-4, 5-6); 58 (1-6); 59 (1-6); 60 (1-6); 61 (1-6); 62 (1-6); 63 (1-6); 64 (1-6); 65 (1-5)
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