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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 6); 2 (1 to 6); 3 (1 to 4, 5-6); 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 7 (1 to 4, 5-6); 8 (1, 2, 3-4, 5, 6); 9 (1 to 6); 10 (1, 2-3, 4-5, 6); 11 (1 to 4, 5-6, 7, 8-9); 12 (1-2, 3-4, 5 to 7, 8-9); 13 (1, 2-3, 4-6, 7, 8-9); 14 (1 to 4, 5-6, 7-9); 15 (1, 2-3, 4 to 6, 7-9); 16 (1, 2-3, 4-6, 7-9); 17 (1, 2-3, 4, 5-7, 8, 9); 18 (1 to 8); 19 (1, 2, 3-4, 5 to 9); 20 (1 to 9); 22 (4 to 9); 23 (1 to 3, 7 to 9); 24 (1 to 9); 25 (1 to 4, 5-7, 8 to 12); 26 (1 to 12); 27 (1 to 12); 28 (1, 3 to 12); 29 (1 to 13); 30 (1 to 12); 31 (1 to 12); 32 (1 to 12); 33 (1 to 3)
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Portico
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Preserved
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2026-04-16
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Preserved : 1993: 1(1), 1994: 2(1), 1995: 3(5), 1996: 4(1, 3)
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Portico
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Preserved
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2026-04-16
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Preserved : 1997: 5(5), 1998: 6(1-4)
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Portico
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Preserved
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2026-04-16
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Preserved : 2003: 10(1-2, 4, 6), 2004/2005: 11(1-5, 7-8), 2005: 12(1, 3, 5-8), 2006: 13(1-2, 4, 7-8), 2007: 14(1-2, 5, 7), 2008: 15(1-2, 4-6), 2009: 16(1, 7), 2010: 17(1-2, 4-5, 8-9), 2011: 18(1, 3-4)
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LOCKSS Archive
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Preserved
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2026-04-13
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1 to 31
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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 18, 21 to 32
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LOCKSS Archive
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In Progress
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2026-04-13
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32, 33
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Portico
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Preserved
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2026-04-16
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Preserved : 1993: 1(1-6), 1994: 2(1-6), 1995: 3(1-6), 1996: 4(1-6), 1997: 5(1-6), 1998: 6(1-6), 2000: 7(1-6), 2000/2001: 8(1-6), 2002: 9(1-6), 2003: 10(1-6), 2004/2005: 11(1-9), 2005: 12(1-9), 2006: 13(1-9), 2007: 14(1-9), 2008: 15(1-9), 2009: 16(1-9), 2010: 17(1-9), 2011: 18(1-8), 2012: 19(1-9), 2013: 20(1-9), 2014: 21(1-9), 2015: 22(1-9), 2016: 23(1-9), 2017: 24(1-9), 2018: 25(1-12), 2019: 26(1-12), 2020: 27(1-12), 2021: 28(1-12), 2022: 29(1-13), 2023: 30(1-12), 2024: 31(1-12), 2025: 32(1-12), 2026: 33(1-4)
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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, 2-3, 4-5, 6); 2 (1 to 9); 3 (1 to 9, 11); 5 (1 to 6); 6 (1 to 6); 7 (1 to 4, 5-6); 8 (1, 2, 3-4, 5, 6); 9 (1 to 6); 11 (1 to 4, 5-6, 7, 8-9); 12 (1-2, 3-4, 5 to 7, 8-9); 13 (1, 2-3, 4-6, 7, 8-9); 14 (1 to 4, 5-6, 7-9); 15 (1, 2-3, 4 to 6, 7-9); 16 (1, 2-3, 4-6, 7-9); 17 (1, 2-3, 4, 5-7, 8, 9); 18 (1 to 8); 19 (1, 2, 3-4, 5 to 9); 21 (1 to 9); 22 (1 to 9); 23 (1 to 9); 24 (1 to 9); 25 (1 to 4, 5-7, 8, 9, 11, 12); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1 to 9, 11, 12); 29 (1 to 9, 11 to 13); 31 (1 to 9, 11, 12); 32 (1, 2, 4)
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 21 (1 to 9); 22 (1 to 3)
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Library of Congress
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Preserved
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2025-04-07
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17 (1, 2-3, 4, 5-7, 8, 9); 18 (1 to 8); 19 (1 to 3-4, 5 to 9); 20 (1 to 9); 21 (1 to 9); 22 (1 to 9); 23 (1 to 9); 24 (1 to 9); 25 (1 to 5-7, 8 to 12); 26 (1 to 12); 27 (1 to 12); 28 (1 to 12); 29 (1 to 13); 30 (1 to 12); 31 (1 to 11)
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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 (1-6); 2 (1-6); 3 (5); 4 (1, 3); 5 (5); 6 (1-4); 10 (1, 2, 4, 6); 11 (1-5, 7, 8); 12 (1, 3, 5-8); 13 (1, 7, 8); 14 (1, 2, 5, 7); 15 (1, 2, 4-7); 16 (1, 2, 4, 7); 17 (1, 2, 4, 5, 8, 9); 18 (1, 3-7)
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