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Internet Archive
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Preserved
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2025-08-08
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10 to 30
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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, 5-6); 2 (, 1 to 3, 4-5, 6-7, 8); 3 (, 1, 2, 3-4, 5, 6); 4 (, 1, 2, 3-4, 5, 6); 5 (, 1 to 4); 6 (, 1 to 4); 7 (, 1 to 4); 8 (, 1 to 4); 9 (, 1, 2, 3-4); 10 (, 1, 2, 3-4); 11 (, 1-2, 3-4); 12 (, 1 to 4); 13 (, 1 to 4); 14 (, 1, 2-3, 4); 15 (, 1-2, 3, 4); 16 (, 1 to 4); 17 (, 1-2, 3-4); 18 (, 1 to 4); 19 (, 1, 2-3, 4); 20 (, 1 to 4); 21 (, 1-2, 3, 4); 22 (, 1 to 4); 23 (, 1-2, 3, 4); 24 (, 1, 2, 3-4); 25 (, 1, 2, 3-4); 26 (, 1 to 4); 27 (, 1-2, 3, 4); 28 (, 1-2, 3, 4); 29 (, 1 to 4); 30 (, 1 to 4); 31 (, 1 to 4); 32 (, 1-2, 3-4); 33 (, 1-2, 3-4); 34 (, 1-2, 3, 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 to 4); 43 (, 1 to 4); 44 (, 1-2, 3, 4); 45 (, 1 to 4); 46 (, 1 to 4); 47 (, 1, 2, 3-4); 48 (, 1, 2-3, 4); 49 (, 1 to 4); 50 (, 1 to 3); 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; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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Portico
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Preserved
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2026-02-12
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Preserved : 1974: 1(1, 3), 1975: 2(1-2, 8)
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Portico
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Preserved
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2026-02-12
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Preserved : 1978: 5(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1984: 10(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1985: 11(3-4), 1986: 12(3), 1987: 13(1), 1988: 14(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 16(3), 1991: 17(3-4), 1992: 18(1, 3-4), 1993: 19(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1994: 20(1, 4), 1995: 21(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1996: 22(4)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1998: 24(2), 1999: 25(1)
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Portico
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Preserved
|
2026-02-12
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Preserved : 2005: 31(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 2010: 35(1-4), 2011: 36(1-4), 2012: 37(1-4), 2013: 38(1-4), 2013/2014: 39(1-4), 2014: 40(1-3)
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LOCKSS Archive
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Preserved
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2026-02-09
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10 to 49
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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, 10 to 50
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LOCKSS Archive
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In Progress
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2026-02-09
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50
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Portico
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Preserved
|
2026-02-12
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Preserved : 2009: 34(1-3), 2010: 35(1-4), 2011: 36(1-4), 2012: 37(1-4), 2013: 38(1-4), 2014: 39(1-4), 2015: 40(1-4), 2016: 41(1-4), 2017: 42(1-4), 2018: 43(1-4), 2019: 44(1-4), 2020: 45(1-4), 2021: 46(1-4), 2022: 47(1-4), 2023: 48(1-3), 2024: 49(1-4), 2025: 50(1-4), 2026: 51(1)
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National Digital Preservation Program, China
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Preserved
|
2025-12-04
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Preserved : 3 (1 to 4); 4 (1 to 4); 5 (1); 23 (3, 4); 24 (1, 2, 3-4); 25 (1, 2, 3-4); 26 (1 to 4); 27 (1-2, 3, 4); 28 (1-2, 3, 4); 29 (1 to 4); 31 (1 to 4); 32 (1-2, 3-4); 33 (1-2, 3-4); 34 (1-2, 3, 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 to 4); 43 (1 to 4); 44 (1-2, 3, 4); 45 (1 to 4); 46 (1 to 4); 47 (1, 2, 3-4); 48 (1, 2-3, 4); 49 (1 to 4)
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