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Scholars Portal
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Preserved
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2026-03-19
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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 to 48); 55 (1 to 7); 1972 (none, 1 to 7, 8-9, 10 to 23); 1973 (none, 1 to 23); 1974 (none, 1 to 23); 1975 (none, 1 to 15, 16-17, 18 to 23); 1976 (none, 1 to 23); 1977 (none, 1 to 23); 1978 (none, 1 to 12); 1979 (none, 1 to 12); 1980 (none, 1 to 12); 1981 (none, 1 to 12); 1982 (none, 1 to 12); 1983 (none, 1 to 12); 1984 (none, 1 to 12); 1985 (1 to 12); 1986 (none, 1 to 12); 1987 (none, 1 to 12); 1988 (none, 1 to 12); 1989 (none, 1 to 12); 1990 (none, 1 to 12); 1991 (S, 1 to 12); 1992 (1 to 24); 1993 (none, 1 to 24); 1994 (none, 1 to 24); 1995 (none, 1 to 24); 1996 (none, 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 (none, 1 to 24); 2005 (1 to 24); 2006 (1 to 48); 2007 (1 to 21, 23 to 48); 2008 (1)
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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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2026-04-09
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Preserved : 1971: 0(1-24)
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|
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LOCKSS Archive
|
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Preserved
|
2026-04-06
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0, 39 to 54
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CLOCKSS Archive
|
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Preserved
|
2026-04-06
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|
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0, 39 to 48, 51
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|
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Portico
|
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Preserved
|
2026-04-09
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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(1-13)
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|
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CLOCKSS Archive
|
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In Progress
|
2026-04-06
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|
|
49, 50, 52 to 55
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|
|
LOCKSS Archive
|
|
In Progress
|
2026-04-06
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|
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55
|
|
|
National Digital Preservation Program, China
|
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Preserved
|
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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|
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National Digital Preservation Program, China
|
|
Preserved
|
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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