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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 (1-2, 3, 4); 4 (1 to 4); 5 (1-4); 6 (3-4); 7 (1-4); 8 (2 to 4); 9 (1 to 4); 10 (1, 2, 3-4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 20 (1 to 6); 21 (1 to 8); 22 (1 to 8); 23 (1 to 8); 24 (1 to 5, 6-7, 8); 25 (1 to 8); 26 (1 to 10); 27 (1 to 10); 28 (1 to 12); 29 (1 to 12); 30 (1 to 12); 31 (1 to 12); 32 (1 to 12); 33 (1 to 12); 34 (1 to 12); 35 (1 to 12); 36 (1 to 12); 37 (1 to 12); 38 (1 to 12); 39 (1 to 12); 40 (1 to 12); 41 (1 to 12); 42 (1 to 12); 43 (1 to 12); 44 (1 to 12); 45 (1, 3 to 12); 46 (1 to 12); 47 (1)
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Internet Archive
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Preserved
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2025-08-08
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6 to 31
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Portico
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Preserved
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2026-04-23
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Preserved : 1985: 7(1-4)
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Portico
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Preserved
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2026-04-23
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Preserved : 2009: 30(12), 2010: 31(1-12), 2011: 32(1, 3-12), 2011/2012: 33(1, 3-10, 12), 2013: 34(1-12), 2014: 35(1-12), 2015: 36(1-6)
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LOCKSS Archive
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Preserved
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2026-04-13
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1 to 45
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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 46
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LOCKSS Archive
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In Progress
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2026-04-13
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46, 47
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Portico
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Preserved
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2026-04-23
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Preserved : 1997: 18(1-6), 1998: 19(1-6), 1999: 20(1-6), 2000: 21(1-8), 2001: 22(1-8), 2002/2005: 23(1-8), 2003: 24(1-8), 2004: 25(1-8), 2005: 26(1-10), 2006: 27(1-10), 2007: 28(1-12), 2008: 29(1-12), 2009: 30(1-12), 2010: 31(1-12), 2011: 32(1-12), 2011/2012: 33(1-12), 2013: 34(1-12), 2014: 35(1-12), 2015: 36(1-12), 2016: 37(1-12), 2017: 38(1-12), 2018: 39(1-12), 2019: 40(1-12), 2020: 41(1-12), 2020/2021: 42(1-12), 2022: 43(1-12), 2023: 44(1-12), 2024: 45(1-12), 2025: 46(1-12), 2026: 47(1-3)
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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 (1 to 6); 3 (1 to 9, 11, 12); 4 (1 to 9, 11, 12); 18 (1 to 6); 19 (1 to 6); 21 (1 to 8); 22 (1 to 8); 23 (1 to 8); 24 (1 to 5, 6-7, 8); 25 (1 to 8); 26 (1 to 9); 27 (1 to 9); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 9, 11, 12); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (1 to 9, 11, 12); 46 (1 to 4)
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Library of Congress
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Preserved
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2025-04-07
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31 (1 to 12); 32 (1 to 12); 33 (1 to 12); 34 (1 to 12); 35 (1 to 12); 36 (1 to 12); 37 (1 to 12); 38 (1 to 12); 39 (1 to 12); 40 (1 to 4, 7 to 12); 41 (1 to 12); 42 (1 to 12); 43 (1 to 12); 44 (1 to 12); 45 (1 to 11)
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