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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (1 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (2, 3); 13 (1, 3); 14 (4); 15 (1); 16 (4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (Supplement:, 1 to 4); 21 (Supplement:, 1 to 3); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 33
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Portico
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Preserved
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2026-04-16
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Preserved : 1986: 1(1-4), 1987: 2(1-4), 1988: 3(1-4), 1989: 4(1-4), 1990: 5(1-4), 1991: 6(1-4), 1992: 7(1-4)
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Portico
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Preserved
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2026-04-16
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Preserved : 1993: 8(2-4), 1994: 9(1-4), 1995: 10(1-4), 1996: 11(3-4), 1997: 12(1)
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Portico
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Preserved
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2026-04-16
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Preserved : 1999: 14(3-4), 2000: 15(1)
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LOCKSS Archive
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Preserved
|
2026-04-13
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20 to 29
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Portico
|
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Preserved
|
2026-04-16
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Preserved : 2007/2008/2009: 23(1-4), 2008/2009: 24(1-4), 2009/2010: 25(1-4), 2010/2011: 26(1-4), 2011/2012: 27(1-4), 2012/2013: 28(1-4), 2014: 29(1-4), 2015: 30(1-4)
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CLOCKSS Archive
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Preserved
|
2026-04-13
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23 to 29
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|
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Portico
|
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Preserved
|
2026-04-16
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Preserved : 2018: 33(4)
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Portico
|
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Preserved
|
2026-04-16
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Preserved : 2020: 35(3)
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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 (2 to 4); 21; 22 (1); 23 (2); 25 (4); 26; 27 (1); 28 (2); 31 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1, 3); 36 (4); 38 (Supplement_1, 3)
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National Digital Preservation Program, China
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Preserved
|
2025-12-04
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|
Preserved : 3 (2 to 4); 21; 22 (1); 23 (2); 25 (4); 26; 27 (1); 28 (2); 31 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1, 3); 36 (4); 38 (Supplement_1, 3)
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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 : 1 (1-4); 2 (1-4); 3 (1-4); 4 (1-4); 5 (1-4); 6 (1-4); 7 (1-4); 8 (1-4); 9 (1-4); 10 (1-4)
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British Library
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Preserved
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2019-09-18
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Preserved : 29 (1 to 2; 4), 33 (3)
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