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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 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 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 6); 32 (, 1 to 6); 33 (, 1 to 6); 34 (, 1 to 6); 35 (, 1 to 6); 42 (, 1 to 6); 43 (, 1 to 6); 44 (, 1 to 6); 45 (, 1 to 5); 47 (, 1 to 6); 48 (, 1 to 6); 49 (, 1 to 6); 50 (, 1 to 6); 51 (, 2 to 6); 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; 2002; 2003; 2004; 2005; 2007; 2008; 2009; 2010; 2011
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Internet Archive
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Preserved
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2025-08-08
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1 to 54
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Portico
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Preserved
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2026-02-12
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Preserved : 2002: 42(1-6), 2003: 43(1-6), 2004: 44(1-6), 2005: 45(1-5)
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Portico
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Preserved
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2026-02-12
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Preserved : 1968: 8(3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1984: 24(3)
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LOCKSS Archive
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Preserved
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2026-02-09
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34 to 64
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Portico
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Preserved
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2026-02-12
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Preserved : 2002: 42(1-6), 2003: 43(1-6), 2004: 44(1-6), 2005: 45(1-6), 2006: 46(1-6), 2007: 47(1-6), 2008: 48(1, 3-6), 2009: 49(1-6), 2010: 50(1-6), 2011: 51(1-6), 2012: 52(1-6), 2013: 53(1-6), 2014: 54(1-6), 2015: 55(1-6), 2016: 56(1-6), 2017: 57(1-6), 2018: 58(1-6), 2019: 59(1-6), 2020: 60(1-6), 2021: 61(1-6), 2022: 62(1-6), 2023: 63(1-6), 2023/2024: 64(1-6), 2025: 65(1-6), 2026: 66
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CLOCKSS Archive
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Preserved
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2026-02-09
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48 to 55
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CLOCKSS Archive
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In Progress
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2026-02-09
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56 to 65
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LOCKSS Archive
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In Progress
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2026-02-09
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65
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LOCKSS Archive
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Preserved
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2026-02-09
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42 to 45
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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 (suppl_1, 1 to 6); 6 (Supplement_1, 1 to 6); 46 (suppl_1, 1 to 6); 47 (suppl_1, 1 to 6); 48 (1, 3 to 6); 49 (suppl_1, 1 to 6); 51 (suppl_1, 1 to 6); 52 (suppl_1, 1 to 6); 53 (suppl_1, 1 to 6); 54 (suppl_1, 1 to 6); 55 (suppl_1, 1 to 6); 56 (1 to 6); 57 (suppl_1, 1 to 6); 58 (suppl_1, 1 to 6); 59 (suppl_1, 1 to 6); 61 (Supplement_1, 1 to 6); 62 (Supplement_1, 1 to 6); 63 (Supplement_1, 1 to 4); 64 (Supplement_1, 1 to 3, 6); 65 (Supplement_1, 1, 2)
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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 (suppl_1, 1 to 6); 6 (Supplement_1, 1 to 6); 46 (suppl_1, 1 to 6); 47 (suppl_1, 1 to 6); 48 (1, 3 to 6); 49 (suppl_1, 1 to 6); 51 (suppl_1, 1 to 6); 52 (suppl_1, 1 to 6); 53 (suppl_1, 1 to 6); 54 (suppl_1, 1 to 6); 55 (suppl_1, 1 to 6); 56 (1 to 6); 57 (suppl_1, 1 to 6); 58 (suppl_1, 1 to 6); 59 (suppl_1, 1 to 6); 61 (Supplement_1, 1 to 6); 62 (Supplement_2, 1 to 6); 63 (Supplement_1, 1 to 4); 64 (Supplement_1, 1 to 3, 6); 65 (Supplement_1, 1)
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British Library
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Preserved
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2019-09-18
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Preserved : 43 (6), 54 (1 to 2; 5 to 6), 55 (2 to 6; S1), 56 (1 to 6), 58 (1; S1), 59 (S1)
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