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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, 5-6); 8 (1 to 6); 9 (1 to 6); 10 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (sup1, 1 to 6); 14 (1 to 6); 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 3, 4-5, 6); 22 (1 to 6); 23 (1-2, 3 to 6); 24 (1 to 6); 25 (1, 2-3, 4 to 6); 26 (1 to 8); 27 (1 to 8, 9–10); 28 (1 to 10); 29 (1 to 10); 30 (1-2, 3 to 10); 31 (1 to 10); 32 (1 to 10); 33 (1 to 10); 34 (1 to 10); 35 (1 to 12); 36 (1 to 12); 37 (1 to 8, 9-10, 11, 12); 38 (1 to 12); 39 (1 to 12); 40 (1 to 12); 41 (1 to 12); 42 (1 to 12); 43 (1, 2)
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Internet Archive
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Preserved
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2025-08-08
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1 to 24
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Portico
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Preserved
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2026-04-09
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Preserved : 1984: 1(1), 1985: 2(3)
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Portico
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Preserved
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2026-04-09
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Preserved : 1987: 4(1, 3)
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Portico
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Preserved
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2026-04-09
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Preserved : 1989: 6(2)
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Portico
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Preserved
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2026-04-09
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Preserved : 1991: 8(5-6), 1992: 9(2-3)
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Portico
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Preserved
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2026-04-09
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Preserved : 1993: 10(2, 4, 6)
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Portico
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Preserved
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2026-04-09
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Preserved : 1997: 14(2)
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Portico
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Preserved
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2026-04-09
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Preserved : 2009: 26(5, 7-8), 2010: 27(1-10), 2011: 28(1-2, 4-10), 2012: 29(1-10), 2013: 30(1-10), 2014: 31(1-10), 2014/2015: 32(1-7)
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LOCKSS Archive
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Preserved
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2026-04-06
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1 to 41
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CLOCKSS Archive
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Preserved
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2026-04-06
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ahead-of-print to 42
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LOCKSS Archive
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In Progress
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2026-04-06
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42, 43
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Portico
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Preserved
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2026-04-09
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Preserved : 1997: 14(1-6), 1998: 15(1-6), 1999: 16(1-6), 2000: 17(1-6), 2001: 18(1-6), 2002: 19(1-6), 2003: 20(1-6), 2004: 21(1-6), 2005: 22(1-6), 2006: 23(1-6), 2007: 24(1-6), 2008: 25(1-6), 2009: 26(1-6), 2010: 27(1-8), 2011: 28(1-10), 2012: 29(1-10), 2013: 30(1-10), 2014: 31(1-10), 2015: 32(1-10), 2016: 33(1-10), 2017: 34(1-10), 2018: 35(1-12), 2019: 36(1-12), 2020: 37(1-12), 2021: 38(1-12), 2022: 39(1-12), 2023: 40(1-12), 2024: 41(1-12), 2025: 42(1-12), 2026: 43(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 (1 to 6); 3 (1-2, 3 to 9); 4 (1 to 9, 12); 14 (1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 21 (1 to 3, 4-5, 6); 22 (1 to 6); 23 (1-2, 3 to 6); 24 (1 to 6); 25 (1, 2-3, 4 to 6); 26 (1 to 8); 27 (1 to 8, 9-1); 28 (1 to 9); 29 (1 to 9); 31 (1 to 9); 32 (1 to 9); 33 (1 to 9); 34 (1 to 9); 35 (1 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 8, 9-1, 11, 12); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1, 3)
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Library of Congress
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Preserved
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2025-04-07
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27 (1 to 9-10); 28 (1 to 10); 29 (1 to 10); 30 (1-2, 3 to 10); 31 (1 to 10); 32 (1 to 10); 33 (1 to 10); 34 (1 to 10); 35 (1 to 12); 36 (1 to 12); 37 (1 to 9-10, 11, 12); 38 (1 to 12); 39 (1 to 12); 40 (1 to 12); 41 (1 to 10)
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