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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 (1 to 4); 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 7 (1 to 6); 8 (sup1, 1 to 6); 9 (1 to 6); 10 (1 to 6); 11 (sup1, 1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (sup5, 1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (sup5, 1 to 6); 19 (sup2, 1 to 6); 20 (sup5, 1 to 6); 21 (sup3, 1 to 6); 22 (1 to 6); 23 (sup6, 1 to 6); 24 (sup6, 1 to 6); 25 (sup3, 1 to 6); 26 (sup5, 1 to 6); 27 (1 to 6); 28 (sup1, 1 to 6); 29 (sup3, 1 to 6); 30 (sup5, 1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (sup1, 1 to 6); 35 (1, 2, 4 to 8); 36 (1 to 8); 37 (1 to 8); 38 (1 to 8); 39 (1 to 8); 40 (1 to 8)
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Internet Archive
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Preserved
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2025-08-08
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1 to 10
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LOCKSS Archive
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Preserved
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2026-04-06
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1 to 31
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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 40
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LOCKSS Archive
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Preserved
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2026-04-06
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1 to 40
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Portico
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Preserved
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2026-04-02
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Preserved : 1984: 3(1-4), 1985: 4(1-4), 1986: 5(1-6), 1987: 6(1-6), 1988: 7(1-6), 1989: 8(1-6), 1990: 9(1-6), 1991: 10(1-6), 1992: 11(1-6), 1993: 12(1-6), 1994: 13(1-6), 1995: 14(1-6), 1996: 15(1-6), 1997: 16(1-6), 1998: 17(1-6), 1999: 18(1-6), 2000: 19(1-6), 2001: 20(1-6), 2002: 21(1-6), 2003: 22(1-6), 2004: 23(1-6), 2005: 24(1-6), 2006: 25(1-6), 2007: 26(1-6), 2008: 27(1-6), 2009: 28(1-6), 2010: 29(1-6), 2011: 30(1-6), 2012: 31(1-6), 2013: 32(1-6), 2014: 33(1-6), 2015: 34(1-6), 2016: 35(1-8), 2017: 36(1-8), 2018: 37(1-8), 2019: 38(1-8), 2020: 39(1-8), 2020/2021: 40(1-8)
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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 (sup5, 1 to 6); 3 (sup5, 1 to 6); 4 (1 to 8); 16 (1 to 6); 17 (1 to 6); 18 (sup5, 1 to 6); 19 (sup2, 1 to 6); 21 (sup3, 1 to 6); 22 (1 to 6); 23 (sup6, 1 to 6); 24 (sup6, 1 to 6); 25 (sup3, 1 to 6); 26 (sup5, 1 to 6); 27 (1 to 6); 28 (sup1, 1 to 6); 29 (sup3, 1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (sup1, 1 to 6); 35 (1 to 8); 36 (1 to 8); 37 (1 to 8); 38 (1 to 8); 39 (1 to 8)
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Library of Congress
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Preserved
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2025-04-07
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30 (5); 35 (6); 36 (3 to 8); 37 (1 to 8); 38 (1 to 8); 39 (1 to 8); 40 (1 to 8)
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