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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, 2-3, 4); 3 (1, 2, 3-4); 4 (1-2, 3, 4); 5 (1 to 4); 6 (1, 2-3, 4); 7 (1, 2-3, 4); 8 (1 to 4); 9 (1-2, 3, 4); 10 (1 to 4); 11 (1 to 4); 12 (1-2, 3, 4); 13 (1-2, 3-4); 14 (1, 2-3, 4); 15 (1-2, 3-4); 16 (1, 2-3, 4); 17 (1-2, 3-4); 18 (1-3, 4); 20 (1-2, 3, 4); 21 (1, 2-3, 4); 22 (1, 2-3, 4); 23 (1-2, 3, 4); 24 (1 to 4); 25 (1, 2, 3-4); 26 (1-2, 3-4); 27 (1, 2, 3-4); 28 (1, 2, 3-4); 29 (1 to 4); 30 (1-2, 3-4); 31 (1, 2, 3-4); 32 (1-3, 4); 33 (1, 2, 3-4); 34 (1, 2, 3-4); 35 (1-2, 3, 4); 36 (1-2, 3, 4); 37 (1)
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Internet Archive
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Preserved
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2025-08-08
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1 to 18
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Portico
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Preserved
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2026-04-02
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Preserved : 1991: 5(1-3), 1992: 6(1-3), 1993: 7(1, 4), 1994: 8(1-4), 1995: 9(3-4), 1996: 10(1-4), 1997: 11(1-4), 1998: 12(1-4), 1999: 13(1-4), 2000: 14(1-4), 2003: 15(1-4), 2004: 16(1-4), 2005: 17(1-4), 2006: 18(1-4), 2007: 19(1-4), 2008: 20(1-4), 2009: 21(1-3), 2010: 22(1-3), 2011: 23(1-4), 2012: 24(1-4), 2013: 25(1-4), 2014: 26(1-4), 2015: 27(1-4), 2016: 28(1-4), 2017: 29(1-4), 2018: 30(1-4), 2019: 31(1-4), 2020: 32(1-4), 2021: 33(1-4), 2022: 34(1-4), 2023: 35(1-4), 2024: 36(1-4), 2025: 37(1-3)
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LOCKSS Archive
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Preserved
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2026-04-06
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1 to 36
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CLOCKSS Archive
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Preserved
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2026-04-06
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ahead-of-print to 37
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LOCKSS Archive
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In Progress
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2026-04-06
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37
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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 (3, 4); 3 (1-2, 3-4); 11 (1 to 4); 12 (1-2, 3, 4); 13 (1-2, 3-4); 14 (1, 2-3, 4); 15 (1-2, 3-4); 16 (1, 2-3, 4); 17 (1-2, 3-4); 18 (1-3, 4); 19 (1, 2-3, 4); 21 (1, 2-3, 4); 22 (1, 2-3, 4); 23 (1-2, 3, 4); 24 (1 to 4); 25 (1, 2, 3-4); 26 (1-2, 3-4); 27 (1, 2, 3-4); 28 (1, 2, 3-4); 29 (1 to 4); 31 (1, 2, 3-4); 32 (1-3, 4); 33 (1, 2, 3-4); 34 (1, 2, 3-4); 35 (1-2, 3, 4); 36 (1-2, 3, 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, 3, 4); 2 (1, 2-3, 4); 3 (1, 2, 3-4); 4 (1-2, 3, 4); 5 (1-4); 6 (1, 2-3, 4); 7 (1, 2-3, 4); 8 (1-4); 9 (1-2, 3, 4); 10 (1-4); 11 (1-4); 12 (1-2, 3, 4); 13 (1-2, 3-4); 14 (1, 2-3, 4); 15 (1-2, 3-4); 16 (1, 2-3, 4); 17 (1-2, 3-4); 18 (1-3, 4); 19 (1, 2-3, 4); 20 (1-2, 3, 4)
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Library of Congress
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Preserved
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2025-04-07
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22 (1, 2-3, 4); 23 (1-2, 3, 4); 24 (1 to 4); 25 (1 to 3-4); 26 (1-2, 3-4); 27 (1 to 3-4); 28 (1 to 3-4); 29 (1 to 4); 30 (1-2, 3-4); 31 (2, 3-4); 32 (1-3, 4); 33 (1 to 3-4); 34 (1 to 3-4); 35 (1-2, 3, 4); 36 (1-2, 3)
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