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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 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1, 2, 4); 16 (1 to 4); 17 (1 to 3, 4-5, 6); 18 (1 to 4, 5-6); 19 (1 to 4, 5-6); 20 (1 to 3, 4-5, 6); 21 (1 to 3, 4-5, 6); 22 (1, 2, 4, 5-6); 23 (1 to 5); 24 (1 to 3, 4-5, 6); 25 (1 to 6); 26 (2, 5, 6); 27 (1 to 4, 6); 28 (1 to 3); 29 (1, 2); 30 (1 to 6); 31; 32 (2, 4 to 6); 33 (1 to 6); 34 (1, 3 to 5); 35 (2, 3-4, 6); 36 (2); 37 (1, 2, 5)
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Portico
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Preserved
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2026-05-14
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Preserved : 1989: 1(1-4), 1990: 2(1-4), 1991: 3(1-4), 1992: 4(1-4), 1993: 5(1-4), 1994: 6(1-4), 1995: 7(1-4), 1996: 8(1-4), 1997: 9(1-4), 1998: 10(1-4), 1999: 11(1-4)
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CLOCKSS Archive
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Preserved
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2026-05-11
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1 to 38
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Portico
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Preserved
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2026-05-14
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Preserved : 2002: 14(4), 2003: 15(1-2)
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Portico
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Preserved
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2026-05-14
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Preserved : 2005: 17(3-6), 2006: 18(1-6), 2007: 19(1-6), 2008: 20(1-2)
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LOCKSS Archive
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In Progress
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2026-05-11
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24, 31
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LOCKSS Archive
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Preserved
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2026-05-11
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25 to 30
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Portico
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Preserved
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2026-05-14
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Preserved : 2014: 26(4-6), 2015: 27(1-6), 2016: 28(1-6), 2017: 29(1-2)
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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 : 9 (1-4); 10 (1-3); 11 (1-4); 12 (1-4); 13 (1-3, 4 ); 14 (1-4); 15 (1-4); 16 (1-4); 17 (1-3, 4-5, 6); 18 (1, 2, 4, 5-6); 19 (1-4, 5-6); 20 (1-3, 4-5, 6); 21 (1-3, 4-5, 6); 22 (1-4, 5-6); 23 (1-5); 24 (1-3, 4-5, 6); 25 (1-6); 26 (1-6); 27 (1-6); 28 (1-6); 29 (1-6); 30 (1-6); 31 (1-5); 174 (8)
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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 (1 to 4); 2 (1 to 4, 6); 3 (1 to 6); 9 (1 to 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4, 6); 18 (1 to 5); 19 (1 to 5); 21 (1 to 4, 6); 22 (1 to 5); 23 (1 to 5); 24 (1 to 4, 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (Suppl 1, 1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1, 2, 3-4, 5, 6); 36 (1 to 3, 5, 6)
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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 (1 to 4); 2 (1 to 4, 6); 3 (1 to 6); 9 (1 to 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4, 6); 18 (1 to 5); 19 (1 to 5); 21 (1 to 4, 6); 22 (1 to 5); 23 (1 to 5); 24 (1 to 4, 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (Suppl 1, 1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1, 2, 3-4, 5, 6); 36 (1 to 3, 5, 6)
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