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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); 8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1, 2, 3-4); 12 (1, 2, 3-4); 13 (1 to 4); 14 (1 to 4); 15 (1, 2, 3-4); 16 (1 to 3, 4-5, 6); 17 (1 to 4, 5-6); 18 (1 to 8); 19 (1 to 8); 20 (1 to 8); 21 (1 to 8); 22 (1 to 3, 5, 6, 7-8); 23 (1, 2, 3-4, 5, 6, 7-8); 24 (1, 2, 3-4, 5, 6, 7-8); 25 (1, 2, 3-4, 5, 6, 7-8); 26 (1 to 8); 27 (1 to 8); 28 (1 to 12); 29 (1 to 12); 30 (1 to 12); 31 (Suppl, 5, 7 to 12); 32 (1 to 24); 33 (1 to 24); 34 (1 to 24); 35 (1 to 36); 36 (1 to 36); 37 (1 to 34, 35-36); 38 (1 to 6)
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LOCKSS Archive
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In Progress
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2026-04-06
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21, 30
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LOCKSS Archive
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Preserved
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2026-04-06
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22 to 29
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 38
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Portico
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Preserved
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2026-04-09
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Preserved : 1993: 1(1-4), 1994: 2(1-4), 1995: 3(1-4), 1996: 4(1-4), 1997: 5(1-4), 1997: 6(1-4), 1998: 7(1-4), 1999: 8(1-4), 2000: 9(1-4), 2001/2002: 10(1-4), 2002/2003: 11(1-4), 2003: 12(1-4), 2004: 13(1-4), 2005: 14(1-4), 2006: 15(1-4), 2007: 16(1-6), 2008: 17(1-6), 2009: 18(1-8), 2010: 19(1-8), 2011: 20(1-8), 2012: 21(1-8), 2013: 22(1-8), 2013: 23(1-8), 2014: 24(1-8), 2014: 25(1-8), 2015: 26(3-8), 2016: 27(1-8), 2017: 28(1-12), 2018: 29(1-12), 2018: 30(1-12), 2012/2019: 31(1, S 1, 2, S 2, 3-12), 2018/2019/2020: 32(1-24), 2021: 33(1-24), 2022: 34(1-24), 2023: 35(2-36), 2024: 36(1-10, 12-33), 2025: 37(1-7, 9, 11-36), 2026: 38(1-7)
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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 4); 2 (1 to 8); 3 (1 to 9, 11, 12); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 11 (1 to 3); 12 (1 to 3); 13 (1 to 4); 14 (1 to 4); 15 (1 to 3); 16 (1 to 4, 6); 17 (1 to 5); 18 (1 to 8); 19 (1 to 8); 21 (Suppl 1, 1 to 8); 22 (Suppl 1, 1 to 3, 5 to 7); 23 (Suppl 1, 1 to 3, 5 to 7); 24 (1 to 3, 5 to 7); 25 (1 to 3, 5 to 7); 26 (1 to 8); 27 (1 to 8); 28 (Suppl 1, 1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (Suppl 1, 1 to 9, 11, 12); 32 (1 to 9, 11 to 19, 21 to 24); 33 (1 to 9, 11 to 19, 21 to 24); 34 (1 to 9, 11 to 19, 21 to 24); 35 (1 to 9, 11 to 19, 21 to 29, 31 to 36); 36 (1 to 9, 11 to 19, 21 to 29, 31 to 36)
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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 4); 2 (1 to 8); 3 (1 to 9, 11, 12); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 11 (1 to 3); 12 (1 to 3); 13 (1 to 4); 14 (1 to 4); 15 (1 to 3); 16 (1 to 4, 6); 17 (1 to 5); 18 (1 to 8); 19 (1 to 8); 21 (Suppl 1, 1 to 8); 22 (Suppl 1, 1 to 3, 5 to 7); 23 (Suppl 1, 1 to 3, 5 to 7); 24 (1 to 3, 5 to 7); 25 (1 to 3, 5 to 7); 26 (1 to 8); 27 (1 to 8); 28 (Suppl 1, 1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (Suppl 1, 1 to 9, 11, 12); 32 (1 to 9, 11 to 19, 21 to 24); 33 (1 to 9, 11 to 19, 21 to 24); 34 (1 to 9, 11 to 19, 21 to 24); 35 (1 to 9, 11 to 19, 21 to 29, 31 to 36); 36 (1 to 9, 11 to 19, 21 to 29, 31 to 36)
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Library of Congress
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Preserved
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2025-04-07
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27 (3); 28 (2, 10); 29 (4 to 12); 30 (1 to 12); 31 (1, S1, S2, 2 to 12); 32 (1 to 24); 33 (1 to 24); 34 (1 to 24); 35 (1 to 36); 36 (1 to 23, 28 to 33)
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National Library of the Netherlands
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Preserved
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2024-12-15
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Preserved : 8 (1-4); 9 (1-4); 10 (1-4); 11 (1, 2, 3-4); 12; 13 (1-4); 14 (1-4); 15 (1, 2, 3-4); 16 (1-3, 4-5, 6); 17 (1-4, 5-6); 18 (1-8); 19 (1-8); 20 (1-8); 21 (supplement-1, 1-8); 22 (supplement-1, 1, 3-4, 5, 6, 7-8); 23 (supplement-1, 1, 2, 6, 7-8); 24 (1, 2, 3-4, 5, 6, 7-8); 25 (1, 2, 3-4, 5, 6, 7-8); 26 (1-8); 27 (1-8); 28 (supplement-1, 1-12); 29 (1-12); 30 (1-12); 31 (supplement-2, 1-12)
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