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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 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 6); 6 (1, 2, 3-4, 5, 6); 7 (1 to 8); 8 (1 to 10); 9 (1 to 12); 10 (1 to 12); 11 (1 to 12); 12 (1 to 12); 13 (1 to 7, 8-9, 10 to 12); 14 (1 to 12); 15 (1 to 12); 16 (1 to 12); 17 (1 to 12); 18 (1 to 12); 19 (1 to 12); 20 (1 to 12); 21 (1 to 24); 22 (1 to 24); 23 (6, 8, 16 to 24); 24 (1 to 24); 25 (1 to 24); 26 (1 to 24); 27 (1 to 24); 28 (Suppl, 1 to 6, 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19 to 21, 23); 29 (1 to 9, 11-12, 13-14, 15-16, 17-18, 19-20, 21-22, 23-24); 30 (1 to 3)
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 30
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Portico
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Preserved
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2026-04-09
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Preserved : 1997: 1(1-4), 1998/1999: 2(1-4), 1999: 3(1-4), 2000: 4(1-4), 2001: 5(1-6), 2002: 6(1-6), 2002/2003: 7(1-8), 2003/2004: 8(1-10), 2005: 9(1-12), 2005/2006: 10(1-12), 2007: 11(1-12), 2008: 12(1-12), 2009: 13(1-12), 2010: 14(1-12), 2010/2011: 15(1-12), 2012: 16(1-12), 2013: 17(1-12), 2014: 18(1-10, 12), 2015: 19(4-12), 2016: 20(1-12), 2017: 21(1-24), 2018: 22(1-24), 2019: 23(1-24), 2019/2020: 24(1-24), 2021: 25(1-24), 2022: 26(1-24), 2023: 27(1-24), 2024: 28(1, S 1, 2, S 2, 3-20, 23), 2025: 29(2-9, 11-24), 2026: 30(1-4)
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LOCKSS Archive
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In Progress
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2026-04-06
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16, 23
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LOCKSS Archive
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Preserved
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2026-04-06
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17 to 22
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Library of Congress
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Preserved
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2025-04-07
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20 (10); 22 (4 to 24); 23 (1 to 24); 24 (1 to 24); 25 (1 to 24); 26 (1 to 24); 27 (1 to 24); 28 (1 to 7-8, 9-10, 11-12, 13-14, 15-16, 17-18, 19, 20)
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : 1 (1 to 9, 11, 12); 2 (1 to 9, 11, 12); 3 (1 to 4); 4 (1 to 4); 5 (1 to 6); 6 (1 to 3, 5, 6); 7 (1 to 8); 8 (1 to 9); 9 (1 to 9, 11, 12); 11 (1 to 9, 11, 12); 12 (1 to 9, 11, 12); 13 (1 to 8, 11, 12); 14 (1 to 9, 11, 12); 15 (1 to 9, 11, 12); 16 (1 to 9, 11, 12); 17 (1 to 9, 11, 12); 18 (1 to 9, 11, 12); 19 (1 to 9, 11, 12); 21 (1 to 9, 11 to 19, 21 to 24); 22 (1 to 9, 11 to 19, 21 to 24); 23 (1 to 9, 11 to 19, 21 to 24); 24 (1 to 9, 11 to 19, 21 to 24); 25 (1 to 9, 11 to 19, 21 to 24); 26 (1 to 9, 11 to 19, 21 to 24); 27 (1 to 9, 11 to 19, 21 to 24); 28 (Suppl 2, 1 to 7, 9, 11, 13, 15, 17, 19, 21, 23)
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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 9, 11, 12); 2 (1 to 9, 11, 12); 3 (1 to 4); 4 (1 to 4); 5 (1 to 6); 6 (1 to 3, 5, 6); 7 (1 to 8); 8 (1 to 9); 9 (1 to 9, 11, 12); 11 (1 to 9, 11, 12); 12 (1 to 9, 11, 12); 13 (1 to 8, 11, 12); 14 (1 to 9, 11, 12); 15 (1 to 9, 11, 12); 16 (1 to 9, 11, 12); 17 (1 to 9, 11, 12); 18 (1 to 9, 11, 12); 19 (1 to 9, 11, 12); 21 (1 to 9, 11 to 19, 21 to 24); 22 (1 to 9, 11 to 19, 21 to 24); 23 (1 to 9, 11 to 19, 21 to 24); 24 (1 to 9, 11 to 19, 21 to 24); 25 (1 to 9, 11 to 19, 21 to 24); 26 (1 to 9, 11 to 19, 21 to 24); 27 (1 to 9, 11 to 19, 21 to 24); 28 (Suppl 2, 1 to 7, 9, 11, 13, 15, 17, 19, 21, 23)
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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 (1-4); 2 (1-4); 3 (1-4); 4 (1-4); 5 (1-6); 6 (1, 2, 3-4, 5, 6); 7 (1-8); 8 (1-10); 9 (1-12); 10 (1-12); 11 (1-7, 10-12); 12 (1-12); 13 (1-7, 8-9, 10-12); 14 (1-12); 15 (1-12); 16 (1-12); 17 (1-12); 18 (1-12); 19 (1-12); 20 (1-12); 21 (1-24); 22 (1-24); 23 (1-24); 37 (15)
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