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