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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, 2); 2 (, 3); 3 (, 4, 5); 4 (, 6, 7); 5 (, 8, 9); 6 (, 10, 11); 7 (, 12); 8 (, 13); 9 (, 14, 15); 10 (, 16); 11 (, 17); 12 (, 18); 13 (, 19); 14 (, 20); 15 (, 21); 16 (, 22); 17 (, 23); 18 (, 24); 19 (, 25-26); 20 (, 27); 21 (, 28); 22 (, 29); 23 (, 30-31); 24 (, 32); 25 (, 33); 26 (, 34); 27 (, 35); 28 (, 36, 37-38); 29 (, 39); 30 (, 40 to 42); 31 (, 43, 44); 32 (, 45); 33 (, 46); 34 (, 47); 35 (, 48); 36 (, 49, 50); 37 (, 51); 38 (, 52, 53-54); 39 (, 55, 56); 40 (, 57, 58); 41 (, 59); 42 (, 60 to 62); 43 (, 63, 64); 44 (, 65, 66); 45 (, 1 to 3); 46 (, 1 to 3); 47 (, 1 to 3); 48 (, 1 to 3); 49 (, 1 to 3); 50 (, 1 to 3); 51 (, 1 to 3); 52 (, 1 to 3); 53 (, 1 to 3); 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 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
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 43, 46 to 53
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 53
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Portico
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Preserved
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2026-02-12
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Preserved : 2013: 45(1-3), 2014: 46(1-3), 2015: 47(1-3), 2016: 48(1-3), 2017: 49(1-3), 2018: 50(1-3), 2019: 51(1-3), 2020: 52(1-3), 2021: 53(1-3)
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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 (4, 41, 42); 4 (57, 58); 5 (1 to 3); 29 (39); 31 (43, 44); 32 (45); 33 (46); 34 (47); 35 (48); 36 (5, 49); 37 (51); 38 (52, 53-54); 39 (55, 56); 41 (59); 42 (6, 61, 62); 43 (63, 64); 44 (65, 66); 45 (1 to 3); 46 (1 to 3); 47 (1 to 3); 48 (1 to 3); 49 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3)
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Library of Congress
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Preserved
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2025-04-07
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42 (60 to 62); 43 (63, 64); 44 (65, 66); 45 (1 to 3); 46 (1 to 3); 47 (1 to 3); 48 (1 to 3); 49 (1 to 3); 50 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3)
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