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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 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (Suppl, 1 to 6); 10 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 7); 15 (1 to 7); 16 (1 to 7); 17 (1 to 9); 18 (1 to 9); 19 (1 to 9); 20 (1 to 12); 21 (1 to 24); 22 (1 to 24); 23 (1 to 24); 24 (1 to 36); 25 (1 to 36); 26 (1 to 36); 27 (1 to 36); 28 (1 to 48); 29 (1 to 60); 30 (1 to 3)
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LOCKSS Archive
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Preserved
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2026-04-13
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1 to 25
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CLOCKSS Archive
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Preserved
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2026-04-13
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1 to 33
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Portico
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Preserved
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2026-04-16
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Preserved : 1994: 1(1-4), 1995: 2(1-4), 1996: 3(1-4), 1997: 4(1-4), 1998: 5(1-4), 1999: 6(1-4), 2000: 7(1-4), 2001: 8(1-4), 2002: 9(1, S 1, 2, S 2, 3-6), 2003: 10(1-6), 2004: 11(1-6), 2005: 12(1-6), 2006: 13(1-6), 2007: 14(1-7), 2008: 15(1-7), 2009: 16(1-7), 2010: 17(1-9), 2011: 18(1-9), 2012: 19(1-9), 2013: 20(1-12), 2014: 21(1-20, 22-24), 2015: 22(1, 3, 5-24), 2016: 23(1-24), 2017: 24(1-36), 2018: 25(1-36), 2019: 26(1-36), 2019/2020: 27(1-36), 2021: 28(1-48), 2022: 29(1-60), 2023: 30(1-60), 2024: 31(1-52, 55, 58, 60), 2025: 32(1, 3-6, 8, 11-12, 14-24, 26-60), 2026: 33(1-9)
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Library of Congress
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Preserved
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2025-04-07
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23 (6, 9, 17, 20); 24 (17, 24, 26, 28, 34); 25 (1 to 36); 26 (1 to 36); 27 (1 to 36); 28 (1 to 34, 36 to 48); 29 (1 to 60); 30 (1 to 60); 31 (1 to 40, 42 to 48); 32 (1)
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 30 (4 to 60); 31 (1 to 13, 15 to 60); 32 (1 to 60); 33 (1 to 7)
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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 6); 2 (1 to 9, 11, 12); 3 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51 to 59); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 7); 15 (1 to 7); 16 (1 to 7); 17 (1 to 9); 18 (1 to 9); 19 (1 to 9); 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 29, 31 to 36); 25 (1 to 9, 11 to 19, 21 to 29, 31 to 36); 26 (1 to 9, 11 to 19, 21 to 29, 31 to 36); 27 (1 to 9, 11 to 19, 21 to 29, 31 to 36); 28 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 29 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51 to 59); 31 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51 to 59)
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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 6); 2 (1 to 9, 11, 12); 3 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51 to 59); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 7); 15 (1 to 7); 16 (1 to 7); 17 (1 to 9); 18 (1 to 9); 19 (1 to 9); 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 29, 31 to 36); 25 (1 to 9, 11 to 19, 21 to 29, 31 to 36); 26 (1 to 9, 11 to 19, 21 to 29, 31 to 36); 27 (1 to 9, 11 to 19, 21 to 29, 31 to 36); 28 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 29 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51 to 59); 31 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51 to 59)
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