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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 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 4); 12 (1, 2, 3-4); 13 (1 to 4); 14 (1, 2, 3-4); 15 (1 to 3); 16 (1 to 3); 17 (1 to 4); 18 (1, 3); 19 (1 to 3); 20 (1 to 3); 21 (1 to 3); 23; 25 (6, 7); 26 (1, 2-3, 4 to 10, 11-12); 27 (1 to 12); 28 (1 to 5, 10 to 12); 29 (1 to 12); 30 (1 to 12); 31 (1 to 7, 9 to 12); 32 (1 to 3, 5 to 12); 33 (1 to 12); 34 (2 to 12); 35 (1 to 3, 4-5, 6 to 20); 36 (1 to 20); 37 (1 to 20); 38 (1 to 17, 18-20); 39 (1 to 20); 40 (1, 3 to 24); 41 (1 to 24); 42 (1 to 5)
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LOCKSS Archive
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Preserved
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2026-04-13
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1 to 40
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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 41
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LOCKSS Archive
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In Progress
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2026-04-13
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41, 42
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Portico
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Preserved
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2026-04-23
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Preserved : 1990: 2(1-4), 1991: 3(1-4), 1992: 4(1-4), 1993: 5(1-4), 1994: 6(1-4), 1995: 7(1-4), 1996: 8(1-4), 1997: 9(1-4), 1998: 10(1-4), 1999: 11(1-4), 2000: 12(1-4), 2001: 13(1-4), 2002: 14(1-4), 2003: 15(1-3), 2003: 16(1-3), 2004: 17(1-4), 2005: 18(1-3), 2005/2006: 19(1-3), 2006: 20(1-3), 2006: 21(1-3), 2007: 22(1-3), 2007: 23(1-3), 2008: 24(1-8), 2009: 25(1-8), 2010: 26(1-12), 2011: 27(1-12), 2012: 28(1-12), 2013: 29(1-12), 2014: 30(1-12), 2015: 31(1-12), 2016: 32(1-12), 2017: 33(1-12), 2018: 34(1-12), 2019: 35(1-20), 2020: 36(1-20), 2021: 37(1-20), 2022: 38(1-20), 2023: 39(1-20), 2024: 40(1-19, 21-24), 2025: 41(1-24), 2026: 42(1-7)
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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 (1 to 4); 2 (1 to 3); 3 (1 to 9, 11, 12); 4 (1 to 9, 11 to 19, 21 to 24); 9 (1 to 4); 11 (1 to 4); 12 (1, 2, 3-4); 13 (1 to 4); 14 (1, 2, 3-4); 15 (1 to 3); 16 (1 to 3); 17 (1 to 4); 18 (1 to 3); 19 (1 to 3); 21 (1 to 3); 22 (1-2, 3); 23 (1-2, 3); 24 (1 to 8); 25 (1 to 8); 26 (1, 2-3, 4 to 9, 11-12); 27 (1 to 9, 11, 12); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 3, 4-5, 6 to 9, 11 to 19); 36 (1 to 9, 11 to 19); 37 (1 to 9, 11 to 19); 38 (1 to 9, 11 to 17, 18-2); 39 (1 to 9, 11 to 19); 41 (1 to 5, 8, 9)
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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 (1-4); 3 (1-4); 4 (1-4); 5 (1-4); 6 (1-4); 7 (1-4); 8 (1-4); 9 (1-4); 10 (1, 3, 4); 11 (1-4); 12 (1, 2, 3-4); 13 (1-4); 14 (1, 2, 3-4); 15 (1-3); 16 (1-3); 17 (1-4); 18 (2, 3); 19 (1-3); 20 (1-3); 21 (1-3); 22 (1-2, 3); 23 (1-2, 3); 24 (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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26 (2-3, 4 to 11-12); 27 (1 to 12); 28 (1 to 12); 29 (1 to 12); 30 (1 to 12); 31 (1 to 12); 32 (1 to 12); 33 (1 to 12); 34 (1 to 12); 35 (1 to 4-5, 6 to 20); 36 (1 to 20); 37 (1 to 3, 5 to 20); 38 (1 to 18-20); 39 (1 to 20); 40 (1 to 20, 22)
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