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Portico
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Preserved
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2026-04-23
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Preserved : 1998/1999: 1(1-7), 2000: 2(1-6), 2001: 3(1-6), 2002: 4(1-6, S 6), 2003: 5(1-6), 2004: 6(1-6), 2005: 7(1-9), 2006: 8(1-5, S 5, 6-12), 2007: 9(1-12), 2008: 10(1-12), 2009: 11(1-12), 2010: 12(1, S 1, 2-12, S 12), 2011: 13(1-12), 2012: 14(1-12), 2013: 15(1-12), 2014: 16(1-12), 2015: 17(1-12), 2016: 18(1-12), 2017: 19(1-12), 2018: 20(1-12), 2019: 21(1-12), 2020: 22(1-12), 2021: 23(1-11), 2022: 24(1-3, 3, S, 4-12), 2023: 25(1-12), 2024: 26(1-12), 2025: 27(1-12), 2026: 28(1-4)
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 3 (4 to 6); 4 (Supplement, 1 to 6); 5 (2 to 6); 6 (1 to 6); 7 (1 to 4, 6 to 9); 8 (Supplement, 1, 2, 10, 11); 10 (10); 15 (8, 9); 17 (5); 18 (4 to 8); 19 (1 to 4); 20 (1, 7, 12); 21 (1, 7, 9); 22 (3, 4, 10); 23 (1, 4, 6 to 8, 10); 24 (1 to 12); 25 (1 to 12); 26 (1 to 12); 27 (1 to 12); 28 (1 to 3)
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CLOCKSS Archive
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Preserved
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2026-04-13
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10 to 28
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Portico
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Preserved
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2026-04-23
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Preserved : 1998/1999: 1(1-7), 2000: 2(1-6), 2001: 3(1-6), 2002: 4(1-6, S 6), 2003: 5(1-4), 2004: 6(1-6), 2005: 7(1-9), 2006: 8(1-5, S 5, 6-12), 2007: 9(1-12), 2008: 10(1-12), 2009: 11(1-12), 2010: 12(1-12), 2011: 13(1-12)
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CLOCKSS Archive
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Preserved
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2026-04-13
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Publish, Ahead, o
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CLOCKSS Archive
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Preserved
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2026-04-13
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10 to 16
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LOCKSS Archive
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In Progress
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2026-04-13
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1 to 22
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CLOCKSS Archive
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Preserved
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2026-04-13
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20 to 23
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Portico
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Preserved
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2026-04-23
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Preserved : 2001: 3(2-4)
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Portico
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Preserved
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2026-04-23
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Preserved : 2004: 6(1)
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Portico
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Preserved
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2026-04-23
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Preserved : 2005: 7(2, 6-7, 9), 2006: 8(1, 4)
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Portico
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Preserved
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2026-04-23
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Preserved : 2008: 10(2)
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Portico
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Preserved
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2026-04-23
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Preserved : 2009: 11(6)
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Portico
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Preserved
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2026-04-23
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Preserved : 2010: 12(11), 2011: 13(7)
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Portico
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Preserved
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2026-04-23
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Preserved : 2013: 15(2, 4, 6-7, 9, 11), 2014: 16(1, 10, 12), 2015: 17(4), 2016: 18(2, 7, 12), 2017: 19(2, 9-10), 2018: 20(3-7, 10-12), 2019: 21(1-12), 2020: 22(1-12), 2021: 23(1-12)
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Library of Congress
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Preserved
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2025-04-07
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18 (2); 19 (1, 11); 20 (7 to 12); 21 (1 to 9, 11, 12); 22 (1 to 12); 23 (1 to 12)
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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 : 2 (3, 5 to 7, 12); 21 (1 to 9, 11, 12); 22 (1 to 4, 6 to 9, 11, 12); 23 (1 to 9, 11, 12)
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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 : 2 (3, 5 to 7, 12); 21 (1 to 9, 11, 12); 22 (1 to 4, 6 to 9, 11, 12); 23 (1 to 9, 11, 12)
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