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Scholars Portal
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Preserved
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2025-09-02
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Preserved : (1, 5 to 48); 39 (, 1 to 29, 31 to 35, 37 to 48); 40 (, 1 to 48); 41 (, 1 to 40, 42 to 48); 42 (, 1 to 10, 12 to 36); 43 (, 2, 8 to 30, 33 to 48); 44 (, 1 to 48); 45 (, 1 to 37, 42 to 48); 46 (, 1 to 28, 30 to 35, 38 to 48); 47 (, 1 to 48); 48 (, 1 to 48); 49 (, 1 to 48); 50 (, 1 to 48); 51 (, 1 to 48); 52 (, 1 to 48); 53 (, 1 to 48); 54 (, 1, 3 to 25); 1972 (, 1 to 7, 8-9, 10 to 23); 1973 (, 1 to 23); 1974 (, 1 to 23); 1975 (, 1 to 15, 16-17, 18 to 23); 1976 (, 1 to 23); 1977 (, 1 to 23); 1978 (, 1 to 12); 1979 (, 1 to 12); 1980 (, 1 to 12); 1981 (, 1 to 12); 1982 (, 1 to 12); 1983 (, 1 to 12); 1984 (, 1 to 12); 1985 (, 1 to 12); 1986 (, 1 to 12); 1987 (, 1 to 12); 1988 (, 1 to 12); 1989 (, 1 to 12); 1990 (, 1 to 12); 1991 (, 1 to 12); 1992 (, 1 to 24); 1993 (, 1 to 24); 1994 (, 1 to 24); 1995 (, 1 to 24); 1996 (, 1 to 24); 1997 (, 1 to 24); 1998 (, 1 to 24); 1999 (, 1 to 24); 2000 (, 1 to 24); 2001 (, 1 to 24); 2002 (, 1 to 24); 2003 (, 1 to 24); 2004 (, 1 to 24); 2005 (, 1 to 24); 2006 (, 1 to 48); 2007 (, 1 to 21, 23 to 48); 2008 (, 1); 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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to 43
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Portico
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Preserved
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2026-02-12
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Preserved : 1971: 0(1-24)
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LOCKSS Archive
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Preserved
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2026-02-09
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0, 39 to 53
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CLOCKSS Archive
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Preserved
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2026-02-09
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0, 39, 42 to 46
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Portico
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Preserved
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2026-02-12
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Preserved : 2010: 39(1-8, 10-48), 2011: 40(1-48), 2012: 41(1-48), 2013: 42(1-48), 2014: 43(1-48), 2015: 44(1-48), 2016: 45(1-48), 2017: 46(1-48), 2018: 47(1-48), 2019: 48(1-48), 2020: 49(1-48), 2021: 50(1-48), 2022: 51(1-48), 2023: 52(1-48), 2024: 53(1-48), 2025: 54(1-48), 2026: 55(1-5)
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CLOCKSS Archive
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In Progress
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2026-02-09
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40, 41, 47 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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54
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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 : (, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 4 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 5 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 39 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 41 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 42 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 43 (1 to 4, 6 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 44 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 45 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41, 42, 48); 46 (1 to 5, 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 47 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 48 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41, 43 to 48); 49 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 51 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 52 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 53 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 54 (1 to 9, 11 to 19, 21 to 29, 31 to 38)
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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 : (, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 4 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 5 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 39 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 41 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 42 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 43 (1 to 4, 6 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 44 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 45 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41, 42, 48); 46 (1 to 5, 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 47 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 48 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41, 43 to 48); 49 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 51 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 52 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 53 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 54 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41, 42)
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