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