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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 7, 8-9); 3 (4 to 12); 4 (1 to 12); 5 (1 to 12); 6 (1 to 12); 7 (1 to 12); 8 (1 to 18); 9 (1 to 18); 10 (1 to 8, 9-10, 11 to 18); 11 (1 to 18); 12 (1 to 18); 13 (1 to 3, 5 to 18); 14 (1 to 5, 7 to 18); 15 (1 to 9, 11, 13, 15 to 18); 16 (1 to 12, 14 to 18); 17 (1 to 10, 12, 14, 15, 17 to 24); 18 (1 to 14, 16, 17, 20 to 24); 19 (1 to 10, 12 to 24); 20 (1 to 4, 6, 8 to 24); 21 (1 to 5, 7 to 15, 17 to 24); 22 (1 to 11, 13 to 24); 23 (1, 2, 4 to 13, 15 to 24); 24 (1 to 3, 5 to 8, 10 to 24); 25 (1 to 14, 16, 19, 20, 22 to 24); 26 (2 to 15)
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 27
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Portico
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Preserved
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2026-04-02
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Preserved : 2000: 1(1-4), 2001: 2(1-12), 2002: 3(1-12), 2003: 4(1-12), 2004: 5(1-12), 2005: 6(1-12), 2006: 7(1-12), 2007: 8(1-18), 2008: 9(1-18), 2009: 10(1-18), 2010: 11(1-18), 2011: 12(1-18), 2012: 13(1-18), 2013: 14(1-18), 2014: 15(1-18), 2015: 16(1-18), 2016: 17(1-24), 2017: 18(1-24), 2018: 19(1-24), 2019: 20(1-24), 2020: 21(1-24), 2021: 22(1-24), 2022: 23(1-24), 2023: 24(1-24), 2024: 25(1-24), 2025: 26(1-24), 2026: 27(1-5)
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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 8, 9?1, 11 to 18); 2 (1 to 7 to 9, 11 to 19, 21 to 24); 3 (1 to 9, 11, 12); 4 (1 to 9, 11, 12); 5 (1 to 9, 11, 12); 6 (1 to 9, 11, 12); 7 (1 to 9, 11, 12); 8 (1 to 9, 11 to 18); 9 (1 to 9, 11 to 18); 11 (1 to 9, 11 to 18); 12 (1 to 9, 11 to 18); 13 (1 to 9, 11 to 18); 14 (1 to 9, 11 to 18); 15 (1 to 9, 11 to 18); 16 (1 to 9, 11 to 18); 17 (1 to 9, 11 to 19, 21 to 24); 18 (1 to 9, 11 to 19, 21 to 24); 19 (1 to 9, 11 to 19, 21 to 24); 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 14, 16 to 19, 21 to 24); 26 (1 to 9, 11, 13 to 15, 17 to 19)
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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 8, 9?1, 11 to 18); 2 (1 to 7 to 9, 11 to 19, 21 to 24); 3 (1 to 9, 11, 12); 4 (1 to 9, 11, 12); 5 (1 to 9, 11, 12); 6 (1 to 9, 11, 12); 7 (1 to 9, 11, 12); 8 (1 to 9, 11 to 18); 9 (1 to 9, 11 to 18); 11 (1 to 9, 11 to 18); 12 (1 to 9, 11 to 18); 13 (1 to 9, 11 to 18); 14 (1 to 9, 11 to 18); 15 (1 to 9, 11 to 18); 16 (1 to 9, 11 to 18); 17 (1 to 9, 11 to 19, 21 to 24); 18 (1 to 9, 11 to 19, 21 to 24); 19 (1 to 9, 11 to 19, 21 to 24); 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 14, 16 to 19, 21 to 24); 26 (1 to 9, 11, 13 to 15, 17, 18)
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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 to 24); 18 (1 to 6, 8, 15, 17 to 19, 21 to 23); 19 (1 to 15, 17 to 22, 24); 20 (2, 4, 6 to 8, 10 to 16, 18 to 24); 21 (1 to 7, 9 to 11, 13 to 17, 20 to 24); 22 (1, 5 to 7, 9 to 24); 23 (1 to 24); 24 (1, 11, 15 to 21); 25 (6 to 9)
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