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