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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (2 to 4); 2 (1 to 4); 3 (sup1, 1 to 4); 4 (1 to 4); 5 (sup1, 1 to 4); 6 (1 to 4); 7 (1 to 5); 8 (sup1, 1 to 6); 9 (5); 14 (sup1); 15 (1 to 8); 16 (sup1, 1 to 10); 17 (sup3, 1 to 10); 18 (sup1, 1 to 12); 19 (sup1, 1 to 12); 20 (sup1, 1 to 12); 21 (sup1, 1 to 12); 22 (sup1, 1 to 11); 23 (1 to 9, 10-11, 12); 24 (1 to 6, 7-8, 9 to 12); 25 (1 to 12); 26 (1 to 12); 27 (1 to 10, 11-12); 28 (sup1, 1 to 12); 29 (sup1, 1 to 10, 11-12); 30 (sup1, 1-3, 4-6, 7-9, 10-12); 31 (1)
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CLOCKSS Archive
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Preserved
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2026-04-13
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ahead-of-print to 30
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Portico
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Preserved
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2026-04-16
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Preserved : 1996: 1(1-4), 1997: 2(1-4), 1998: 3(1-4), 1999: 4(1-4), 2000: 5(1-4), 2001: 6(1-4), 2002: 7(1-5), 2003: 8(1-6), 2004: 9(1-6), 2005: 10(1-8), 2006: 11(1-8), 2007: 12(1-8), 2008: 13(1-8), 2009: 14 Suppl 1, 2009: 14(1-8), 2010: 15(1, S 1, 2, S 2, 3, S 3, sup3-8), 2011: 16(1-10), 2012: 17(1-10), 2013: 18(1-12), 2014: 19(1-12), 2015: 20(1-12), 2016: 21(1-12), 2017: 22(1-12), 2018: 23(1-12), 2019: 24(1-12), 2020: 25(1-12), 2021: 26(1-12), 2022: 27(1-12), 2023: 28(1, sup1, 1, 2, sup2, 2, 3-12), 2024: 29(1-12), 2025: 30(1-3, sup1, 1, 4-12), 2026: 31(1-3)
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LOCKSS Archive
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Preserved
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2026-04-13
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1 to 29
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CLOCKSS Archive
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Preserved
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2026-04-13
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13 to 22
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LOCKSS Archive
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In Progress
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2026-04-13
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30, 31
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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 (sup1, 1 to 8); 2 (sup1, 1 to 9, 11, 12); 3 (sup1, 1 to 4); 4 (1 to 4); 5 (sup1, 1 to 4); 6 (1 to 4); 7 (1 to 5); 8 (sup1, 1 to 6); 9 (sup1, 1 to 6); 11 (sup1, 1 to 8); 12 (1 to 8); 13 (1 to 8); 14 (sup1, 1 to 8); 15 (sup1, 1 to 8); 16 (sup1, 1 to 9); 17 (sup1, 1 to 9); 18 (sup1, 1 to 9, 11, 12); 19 (sup1, 1 to 9, 11, 12); 21 (sup1, 1 to 9, 11, 12); 22 (sup1, 1 to 9, 11, 12); 23 (1 to 9, 12); 24 (1 to 6, 7-8, 9, 11, 12); 25 (1 to 9, 11, 12); 26 (1 to 9, 11, 12); 27 (1 to 9, 11-12); 28 (sup1, 1 to 9, 11, 12); 29 (sup1, 1 to 9, 11-12)
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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 : 1 (1-4); 2 (1-4); 3 (1-4); 4 (1-4); 5 (1-4); 6 (1-4); 7 (1-5); 8 (1-6); 9 (1-6); 10 (1-8); 11 (1-8); 12 (1-8); 13 (1-7)
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Library of Congress
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Preserved
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2025-04-07
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22 (sup1, 1, 3 to 12); 23 (1 to 10-11, 12); 24 (1 to 7-8, 9 to 12); 25 (1 to 12); 26 (1 to 12); 27 (1 to 11-12); 28 (sup2, sup1, 1 to 12); 29 (sup1, 1 to 9)
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