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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 3); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 5); 7 (sup1, 1 to 5); 8 (1 to 6); 9 (1 to 6); 10 (sup1, 1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (sup1, 1 to 6); 15 (1 to 6); 16 (sup1, 1 to 8); 17 (sup1, 1 to 8); 18 (sup1, 1 to 8); 19 (sup1, 1 to 10); 20 (1 to 10); 21 (sup1, 1 to 12); 22 (sup1, 1 to 12); 23 (sup1, 1 to 12); 24 (1 to 12); 25 (sup1, 1 to 12); 26 (sup1, 1 to 12); 27 (sup1, 1 to 12); 28 (sup1, 1 to 3, 6 to 12); 29 (1 to 12); 30 (sup1, 1, 3 to 12); 31 (sup1, 1 to 12); 32 (S1, 1 to 12); 33 (S1, 1 to 12); 34 (S1, 1 to 12); 35 (1 to 12); 36 (sup1, 1 to 3, 5 to 12); 37 (1 to 12); 38 (1 to 3)
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Internet Archive
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Preserved
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2025-08-08
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6 to 25
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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 37
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Portico
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Preserved
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2026-04-02
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Preserved : 1989: 1(1-3), 1990: 2(1-4), 1991: 3(1-4), 1992: 4(1-4), 1993: 5(1-4), 1994: 6(1-5), 1995: 7(1-5), 1996: 8(1-6), 1997: 9(1-6), 1998: 10(1-6), 1999: 11(1-6), 2000: 12(1-6), 2001: 13(1-6), 2002: 14(1-6), 2003: 15(1-6), 2004: 16(1-8), 2005: 17(1-8), 2006: 18(1-8), 2007: 19(1-10), 2008: 20(1-10), 2009: 21(1, Suppl 1, sup1-12), 2010: 22(1, S 1, sup1-12), 2011: 23(1, S 1, sup1-12), 2012: 24(1-12), 2013: 25(1-12), 2014: 26(1-12), 2015: 27(1-12), 2016: 28(1-12), 2017: 29(1-12), 2018: 30(1-12), 2019: 31(1-12), 2020: 32(1-12), 2021: 33(1-12), 2022: 34(1-12), 2023: 35(1-12), 2024: 36(1-12), 2025: 37(1-12), 2026: 38(1-2)
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LOCKSS Archive
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Preserved
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2026-03-30
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1 to 37
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CLOCKSS Archive
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Preserved
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2026-03-30
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20 to 29
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LOCKSS Archive
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In Progress
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2026-03-30
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38
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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 6); 2 (1 to 9); 3 (sup2, 1 to 9, 11, 12); 9 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (sup1, 1 to 6); 15 (1 to 6); 16 (sup1, 1 to 8); 17 (sup1, 1 to 8); 18 (sup1, 1 to 8); 19 (sup1, 1 to 9); 21 (sup1, 1 to 9, 11, 12); 22 (sup1, 1 to 9, 11, 12); 23 (sup1, 1 to 9, 11, 12); 24 (1 to 9, 11, 12); 25 (sup1, 1 to 9, 11, 12); 26 (sup1, 1 to 9, 11, 12); 27 (sup1, 1 to 9, 11, 12); 28 (sup1, 1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (sup1, 1 to 9, 11, 12); 32 (sup2, 1 to 9, 11, 12); 33 (S1, 1 to 9, 11, 12); 34 (S1, 1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (sup1, 1 to 9, 11, 12); 37 (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 : 1 (1-3); 2 (1-4); 3 (1-4); 4 (1-4); 5 (1-4); 6 (1-5); 7 (1-5); 8 (1-6); 9 (1-6); 10 (1-6); 11 (1-6); 12 (1-6); 13 (1-6); 14 (1-6); 15 (1-6); 16 (1-8); 17 (1-8); 18 (1-8); 19 (1-10); 20 (1-10); 117 (1-3)
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Library of Congress
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Preserved
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2025-04-07
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22 (sup2, sup1, 1 to 12); 23 (sup1, 1 to 12); 24 (1 to 12); 25 (sup1, 1 to 12); 26 (sup1, 1 to 12); 27 (sup1, 1 to 12); 28 (sup2, sup3, sup1, sup4, 1 to 12); 29 (1 to 12); 30 (sup2, sup3, sup1, sup4, sup5, 1 to 12); 31 (sup1, 1 to 12); 32 (sup2, S1, 1 to 12); 33 (S1, 1 to 12); 34 (S1, 1 to 12); 35 (1 to 12); 36 (sup1, 1 to 12)
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