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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 3); 2 (, 1 to 3); 3 (, 1, 2-3); 4 (, 1 to 3); 5 (, 1 to 3); 6 (, 1 to 3); 7 (, 1 to 3); 8 (, 1 to 3); 9 (, 1 to 3); 10 (, 1 to 3); 11 (, 1); 12 (, 2); 13 (, 1 to 3); 14 (, 1 to 3); 15 (, 1 to 3); 16 (, 1 to 3); 17 (, 1 to 3); 18 (, 1 to 3); 19 (, 1 to 3); 20 (, 1 to 3); 21 (, 1 to 3); 22 (, 1 to 3); 23 (, 1 to 3); 24 (, 1 to 3); 25 (, 1 to 3); 26 (, 1 to 3); 27 (, 1, 2, 3-4); 28 (, 1, 2, 3-4); 29 (, 1 to 4); 30 (, 1, 2, 3-4); 31 (, 1 to 6); 32 (, 1 to 6, 47, 49, 50); 33 (, 1 to 6); 34 (, 1, 2, 4 to 6); 35 (, 1 to 6); 36 (, 1 to 6); 37 (, 1 to 6); 38 (, 1 to 6); 39 (, 1-2, 3 to 6); 40 (, 1 to 6); 41 (, 1 to 6); 42 (, 1 to 6); 43 (, 1 to 6); 44 (, 1 to 6); 45 (, 1 to 6); 46 (, 1 to 6); 47 (, 1 to 6); 48 (, 1 to 6); 49 (, 1 to 6); 50 (, 1 to 4, 5-6); 51 (, 1 to 6); 52 (, 1 to 6); 53 (, 1 to 6); 54 (, 1 to 6); 55 (, 1 to 6); 56 (, 1); 57 (, 1); 58 (, 1); 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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Portico
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Preserved
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2026-02-12
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Preserved : 1969: 3(2-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 2009: 43(6), 2010: 44(1-6, S 58), 2011: 45(1-6, S 58, S 59), 2012: 46(1-6, S 60), 2013: 47(1-6, S 61, S 62), 2014: 48(1-6, S 63), 2015: 49(1-5)
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LOCKSS Archive
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Preserved
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2026-02-09
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31 to 58
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CLOCKSS Archive
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Preserved
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2026-02-09
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ahead-of-print, 31 to 59
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LOCKSS Archive
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In Progress
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2026-02-09
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59
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Portico
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Preserved
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2026-02-12
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Preserved : 1997: 31(1-6), 1998: 32(1-6), 1999: 33(1-6), 2000: 34(1-2, 4-6), 2001: 35(1-6), 2002: 36(1-6), 2003: 37(1-6), 2004: 38(1-6), 2005: 39(1-6), 2006: 40(1-6), 2007: 41(1-6), 2007/2008: 42(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 2009: 43(1-6, supp 57), 2010: 44(1-6), 2011: 45(1-6), 2012: 46(1-6), 2013: 47(1-6), 2014: 48(1-6), 2015: 49(1-6), 2016: 50(1-6), 2017: 51(1-6), 2018: 52(1-6), 2019: 53(1-6), 2020: 54(1-6), 2021: 55(1-6), 2022: 56(1), 2023: 57(1), 2024: 58(1), 2025: 59(1), 2026: 60(1)
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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 (sup54, 1 to 6); 5 (1 to 4, 5-6); 31 (1 to 6); 32 (1 to 6, 47, 49); 33 (1 to 6); 34 (1, 2, 4 to 6); 35 (1 to 6); 36 (1 to 6); 37 (sup52, 1 to 6); 38 (1 to 6); 39 (1-2, 3 to 6); 41 (1 to 6); 42 (sup56, 1 to 6); 43 (sup1, 1 to 6); 44 (sup58, 1 to 6); 45 (sup59, 1 to 6); 46 (sup6, 1 to 6); 47 (sup61, 1 to 6); 48 (sup63, 1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1); 57; 58
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