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Internet Archive
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Preserved
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2025-08-08
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1 to 42
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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 10); 2 (, 1 to 10); 3 (, 1 to 10); 4 (, 1 to 10); 18 (, 2); 19 (, 3, 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 (, 2 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, 2, 4); 41 (, 1 to 4); 42 (, 1 to 4); 43 (, 1 to 4); 44 (, 1, 2, 4 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 6); 51 (, 1 to 6); 52 (, 1 to 4, 6); 53 (, 1 to 4); 1972; 1973; 1974; 1975; 1976; 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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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 4, 12, 18 to 52
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 4, 12, 18 to 54
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LOCKSS Archive
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In Progress
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2026-02-09
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53
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Portico
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Preserved
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2026-02-12
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Preserved : 1972/1973: 1(1-10), 1973/1974: 2(1-10), 1974/1975: 3(1-10), 1975/1976: 4(1-10)
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Portico
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Preserved
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2026-02-12
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Preserved : 1984: 12(6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 18(2), 1991: 19(3-4), 1991/1992: 20(1-4), 1992/1993: 21(1-4), 1993/1994: 22(1-4), 1994/1995: 23(1-4), 1995/1996: 24(1-4), 1996/1997: 25(1-4), 1997/1998: 26(1-4), 1999: 27(2-4), 1999/2000: 28(1-4), 2000/2001: 29(1-4), 2001/2002: 30(1-4), 2002/2003: 31(1-4), 2003/2004: 32(1-4), 2004/2005: 33(1-4), 2005/2006: 34(1-4), 2006/2007: 35(1-4), 2007/2008: 36(1-4), 2008/2009: 37(1-4), 2009/2010: 38(1-4), 2011: 39(1-4), 2012: 40(1-4), 2013: 41(1-4), 2014: 42(1-4), 2015: 43(1-4), 2016: 44(1-6), 2017: 45(1-6), 2018: 46(1-6), 2019: 47(1-6), 2020: 48(1-6), 2021: 49(1-6), 2022: 50(1-6), 2023: 51(1-6), 2024: 52(1-6), 2025: 53(1-6), 2026: 54(1)
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Library of Congress
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Preserved
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2025-04-07
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45 (3 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 50 (1 to 6); 51 (1 to 6); 52 (1 to 6)
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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 to 6); 25 (2 to 4); 26 (1 to 4); 27 (2 to 4); 28 (1 to 4); 29 (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); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1, 2)
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