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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, 2); 2 (1, 2, 3-4); 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 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 6); 19 (1 to 9); 20 (1, 2, 3-4, 5 to 7, 8-9); 21 (1, 2, 3-4, 5 to 9); 22 (1 to 3, 4-5, 6 to 9); 23 (1 to 9); 24 (1 to 12); 25 (1 to 12); 26 (1 to 10, 11-12); 27 (1 to 12); 28 (1 to 5, 6-7, 8 to 12); 29 (1 to 12); 30 (1 to 8, 9-10, 11, 12); 31 (1 to 12); 32 (1-2, 3 to 5, 6-7, 8 to 12); 33 (1 to 12); 34 (1 to 4, 5-6, 7 to 12); 35 (1-3, 4, 10 to 12); 36 (1 to 12); 37 (1 to 12); 38 (1 to 8, 10 to 12); 39 (1, 5 to 12); 40 (1 to 12); 41 (1, 3 to 9, 10-12); 42 (1 to 12); 43 (1 to 12); 44 (1 to 12); 45 (1 to 12); 46 (1 to 12); 47 (1, 2, 4 to 12); 48 (1 to 12); 49 (1, 2)
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Internet Archive
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Preserved
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2025-08-08
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1 to 22
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Portico
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Preserved
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2026-04-02
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Preserved : 1994: 17(1-4), 1995: 18(1-6), 1996: 19(1-9), 1997: 20(1-9), 1998: 21(1-9), 1999: 22(1-9), 2000: 23(1-9), 2001: 24(1-12), 2002: 25(1-12), 2003: 26(1-12), 2004: 27(1-12), 2004/2005: 28(1-5, 8-12), 2006: 29(1-12), 2007: 30(1-12), 2008: 31(1-12), 2008/2009: 32(1-12), 2010: 33(1-12), 2011: 34(1-12), 2012: 35(1-12), 2013: 36(1-12), 2014: 37(1-12), 2015: 38(1-12), 2016: 39(1-12), 2017: 40(1-12), 2018: 41(1-12), 2019: 42(1-12), 2020: 43(1-12), 2020/2021: 44(1-12), 2022: 45(1-12), 2023: 46(1-12), 2024: 47(1-12), 2025: 48(1-12), 2026: 49(1-4)
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LOCKSS Archive
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Preserved
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2026-03-30
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1 to 47
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CLOCKSS Archive
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Preserved
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2026-03-30
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ahead-of-print to 48
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LOCKSS Archive
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In Progress
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2026-03-30
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48, 49
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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 : 2 (2, 3-4, 5 to 7, 8-9); 3 (1 to 8, 9-1, 11, 12); 4 (1 to 9, 11, 12); 21 (1, 2, 3-4, 5 to 9); 22 (1 to 3, 4-5, 6 to 9); 23 (1 to 9); 24 (1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (1 to 9, 11-12); 27 (1 to 9, 11, 12); 28 (1 to 5, 6-7, 8, 9, 11, 12); 29 (1 to 9, 11, 12); 31 (1 to 9, 11, 12); 32 (1-2, 3 to 5, 6-7, 8, 9, 11, 12); 33 (1 to 9, 11, 12); 34 (1 to 4, 5-6, 7 to 9, 11, 12); 35 (1-3, 4 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 9, 11, 12); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9); 42 (1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 4)
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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, 2); 2 (1, 2, 3-4); 3 (1-4); 4 (1, 2, 3-4); 5 (1, 2, 3-4); 6 (1, 2-4); 7 (1, 2, 3-4); 8 (1-4); 9 (1-5); 10 (1-4); 11 (1-4); 12 (1-4); 13 (1-4); 14 (1-4); 15 (1-4); 16 (1-4); 17 (1-4); 18 (1-6); 19 (1-9); 20 (1, 2, 3-4, 5-7, 8-9); 21 (1, 2, 3-4, 5-9); 22 (1-3, 4-5, 6-9); 23 (1-9); 24 (1-12); 25 (1-12); 26 (1-10, 11-12); 27 (1-12); 28 (8-12); 29 (1-12); 30 (1-8, 9-10, 11, 12); 31 (1-12)
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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 : 6 (1-4); 7 (1-5)
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Library of Congress
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Preserved
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2025-04-07
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33 (2 to 11); 34 (4, 5-6, 7 to 10); 35 (4 to 6, 8, 10 to 12); 36 (1 to 12); 37 (1 to 6, 8 to 12); 38 (1 to 7, 9 to 11); 39 (1 to 5, 7 to 11); 40 (1, 3 to 12); 41 (1 to 10-12); 42 (1, 3 to 6, 8 to 12); 43 (1 to 12); 44 (1 to 12); 45 (1 to 12); 46 (1 to 12); 47 (1 to 11)
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