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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 6); 2 (1 to 6); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1, 2, 3-4); 8 (1 to 4); 9 (1 to 4); 10 (1, 2, 3-4); 11 (1, 2, 3-4); 12 (1, 2, 3-4); 13 (1 to 4); 14 (1, 2-3, 4); 15 (1, 2-3, 4); 16 (1, 2-3, 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 6); 26 (1 to 8); 27 (1 to 8); 28 (1 to 8); 29 (1, 2-3, 4 to 8, 9-10); 30 (1 to 8, 9-10); 31 (1 to 12); 32 (1 to 12); 33 (1 to 12); 34 (sup1, 1 to 12); 35 (sup1, 1 to 12); 36 (sup1, 1 to 12); 37 (sup1, 1 to 12); 38 (sup1, 1 to 12); 39 (sup1, 1 to 12); 40 (sup1, 1 to 12); 41 (1 to 12); 42 (1 to 12); 43 (S1, 1 to 12); 44 (1 to 12); 45 (1 to 12); 46 (sup1, 1 to 12); 47 (1 to 12); 48 (1 to 3)
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Portico
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Preserved
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2026-04-16
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Preserved : 1990: 12(3-4)
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Portico
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Preserved
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2026-04-16
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Preserved : 1999: 21(2, 6), 2000: 22(5-6)
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Portico
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Preserved
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2026-04-16
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Preserved : 2001: 23(5), 2002: 24(1-2, 4-6), 2003: 25(1-2)
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Portico
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Preserved
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2026-04-16
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Preserved : 2004: 26(5-7), 2005: 27(1, 3, 6, 8), 2006: 28(4-5, 7-8), 2007: 29(2-4, 6), 2008: 30(2-3, 6-7)
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Portico
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Preserved
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2026-04-16
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Preserved : 2009: 31(7, 10-12), 2010: 32(1-12), 2011: 33(1-12), 2012: 34(1, S 1, 2-12), 2012/2013: 35(1, S 1, 2-12), 2013/2014: 36(1, S 1, 2-12), 2015: 37(1, S 1, 2-7)
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LOCKSS Archive
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Preserved
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2026-04-13
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1 to 46
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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 47
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LOCKSS Archive
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In Progress
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2026-04-13
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47, 48
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Portico
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Preserved
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2026-04-16
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Preserved : 1999: 21(1-6), 2000: 22(1-6), 2001: 23(1-6), 2002: 24(1-6), 2003: 25(1-6), 2004: 26(1-8), 2005: 27(1-8), 2006: 28(1-8), 2007: 29(1, 4-8), 2008: 30(1-10), 2009: 31(1-12), 2010: 32(1-12), 2011: 33(1-12), 2012: 34(1-12), 2013: 35(1-12), 2014: 36(1-12), 2015: 37(1-12), 2016: 38(1-12), 2017: 39(1-12), 2018: 40(1-12), 2019: 41(1-12), 2020: 42(1-12), 2021: 43(1-12), 2022: 44(1-12), 2023: 45(1-12), 2024: 46(1-12), 2025: 47(1-12), 2026: 48(1-4)
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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 (2 to 6); 3 (1 to 8, 9-1); 4 (sup1, 1 to 9, 11, 12); 19 (1 to 4); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 6); 26 (1 to 8); 27 (1 to 8); 28 (1 to 8); 29 (1, 2-3, 4 to 8, 9-1); 31 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12); 34 (sup1, 1 to 9, 11, 12); 35 (sup1, 1 to 9, 11, 12); 36 (sup1, 1 to 9, 11, 12); 37 (sup1, 1 to 9, 11, 12); 38 (sup1, 1 to 9, 11, 12); 39 (sup1, 1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (S2, 1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (1 to 9, 11, 12); 46 (sup1, 1 to 9, 11, 12); 47 (1 to 3, 5)
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Library of Congress
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Preserved
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2025-04-07
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32 (1 to 12); 33 (1 to 12); 34 (sup1, 1 to 12); 35 (sup1, 1 to 12); 36 (sup1, 1 to 12); 37 (sup1, 1 to 12); 38 (sup1, 1 to 12); 39 (sup1, 1 to 12); 40 (sup1, 1 to 12); 41 (1 to 3, 6 to 12); 42 (1 to 12); 43 (S2, S1, 1 to 12); 44 (1 to 12); 45 (1 to 12); 46 (sup1, 1 to 11)
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