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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 6); 2 (, 1, 2-3, 4 to 6); 3 (, 1 to 12); 4 (, 1 to 12); 5 (, 1 to 12); 6 (, 1 to 12); 7 (, 1 to 12); 8 (, 1 to 12); 9 (, 1 to 12); 10 (, 1 to 12); 11 (, 1 to 12); 12 (, 1 to 12); 13 (, 1 to 12); 14 (, 1 to 12); 15 (, 1 to 12); 16 (, 1 to 12); 17 (, 1 to 12); 18 (, 1 to 12); 19 (, 1 to 12); 20 (, 1 to 12); 21 (, 1 to 12); 22 (, 1 to 12); 23 (, 1 to 12); 24 (, 1 to 12); 25 (, 1 to 12); 26 (, 1 to 12); 27 (, 1 to 12); 28 (, 1 to 12); 29 (, 1 to 12); 30 (, 1 to 12); 31 (, 1 to 12); 32 (, 1 to 12); 33 (, 1 to 5, 6-7, 8 to 12); 34 (, 1 to 12); 35 (, 1 to 12); 36 (, 1 to 10, 11-12); 37 (, 1 to 12); 38 (, 1 to 12); 39 (, 1 to 12); 40 (, 1 to 12); 41 (, 1 to 12); 42 (, 1 to 12); 43 (, 1 to 8, 9-10, 11, 12); 44 (, 1, 2, 3-4, 5 to 12); 45 (, 1 to 12); 46 (, 1 to 8, 9-10, 11, 12); 47 (, 1 to 12); 48 (, 1 to 7, 8-9, 10, 11-12); 49 (, 1 to 6, 7-8, 9-10, 11, 12); 50 (, 1 to 8, 9-10, 11-12); 51 (, 1 to 12); 52 (, 1 to 12); 53 (, 1 to 12); 54 (, 1 to 7); 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 33
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 55
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Portico
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Preserved
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2026-02-12
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Preserved : 1980: 9(8), 1981: 10(8), 1982: 11(7), 1983: 12(4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1989: 18(9)
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Portico
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Preserved
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2026-02-12
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Preserved : 1992: 21(12), 1993: 22(8)
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Portico
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Preserved
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2026-02-12
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Preserved : 1997: 26(1-12), 1998: 27(1-12), 1999: 28(1-12), 2000: 29(1-12), 2001: 30(1-12), 2002: 31(1-12), 2003: 32(1-12), 2004: 33(1-12), 2005: 34(1-12), 2006: 35(1-12), 2007: 36(1-12), 2008: 37(1-12), 2009: 38(1-12), 2010: 39(1-12), 2011: 40(1-12), 2012: 41(1-8, 10-12), 2013: 42(1-8, 10-12), 2014: 43(1-12), 2015: 44(2-12), 2016: 45(1-12), 2017: 46(1-12), 2018: 47(1-12), 2019: 48(1-5, 7-12), 2020: 49(1-12), 2021: 50(1-12), 2022: 51(1-12), 2023: 52(3-12), 2024: 53(1-12), 2025: 54(1-3, 5-12), 2026: 55(1)
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LOCKSS Archive
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In Progress
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2026-02-09
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41, 48
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LOCKSS Archive
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Preserved
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2026-02-09
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42 to 47
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Library of Congress
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Preserved
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2025-04-07
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47 (2 to 12); 48 (1 to 8-9, 10, 11-12); 49 (1 to 7-8, 9-10, 11, 12); 50 (1 to 9-10, 11-12); 51 (1 to 12); 52 (1 to 12); 53 (1 to 11); 54 (1)
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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 : 3 (1 to 9, 11, 12); 4 (1 to 9, 11, 12); 5 (1 to 8, 9-1, 11-12); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 6, 8, 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 9, 11); 37 (1 to 9, 11, 12); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (1 to 3, 5 to 9, 11, 12); 45 (1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 7, 8-9, 11-12); 49 (1 to 6, 7-8, 9-1, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11, 12)
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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 : 3 (1 to 9, 11, 12); 4 (1 to 9, 11, 12); 5 (1 to 8, 9-1, 11-12); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 6, 8, 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 9, 11); 37 (1 to 9, 11, 12); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (1 to 3, 5 to 9, 11, 12); 45 (1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 7, 8-9, 11-12); 49 (1 to 6, 7-8, 9-1, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11, 12)
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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 : 26 (1, 12); 27 (1-12); 28 (1-12); 29 (1-12); 30 (1-12); 31 (1-12); 32 (1-12); 33 (1-6, 8-12); 34 (1-12); 35 (1-6, 9-12); 36 (1-10, 11-12); 37 (1-12); 38 (1-12); 39 (1-12); 40 (1-12); 41 (1-12); 42 (1-12); 43 (1-8, 9-10, 11, 12); 44 (1, 2, 3-4, 5-12); 45 (1-12); 46 (1-8, 9-10, 11, 12); 47 (1-12); 48 (1-7, 8-9, 10)
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