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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (2, 3-4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 5); 7 (1 to 6); 8 (1 to 6); 9 (s01, 1 to 7); 10 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 8); 14 (1 to 12); 15 (1 to 12); 16 (1 to 12); 17 (1 to 12); 18 (1 to 12); 19 (1 to 12); 20 (1 to 12); 21 (1 to 12); 22 (1 to 12); 23 (1 to 12); 24 (1 to 12); 25 (1 to 12); 26 (1 to 12); 27 (2, 7 to 12); 28 (1 to 12); 29 (1 to 12); 30 (1 to 12); 31 (1 to 12); 32 (1 to 12); 33 (1 to 8)
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 34
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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), 1995/1996: 3(1-4), 1996: 4(1-4), 1997: 5(1-4), 1998: 6(1, S 1, 2-4), 1999: 7(1-6), 2000: 8(1-6), 2001: 9(1, S 1, 2-6), 2002: 10(1-6), 2003: 11(1-6), 2004: 12(1-6), 2005: 13(1-8), 2006: 14(1-12), 2007: 15(1-12), 2008: 16(1, S 1, 2-12), 2009: 17(1-12), 2010: 18(1, S 1, 2-12), 2011: 19(1, S1, 2-12), 2012: 20(1, S 1, 2-12), 2013: 21(1-12), 2014: 22(1, S 1, 2-12), 2015: 23(1-12), 2016: 24(1, S 1, 2-12), 2017: 25(1-12), 2018: 26(1, S 1, 2-12), 2019: 27(1-12), 2020: 28(1-12), 2021: 29(1-12), 2022: 30(1-12), 2023: 31(1-12), 2024: 32(1-12), 2025: 33(1-12), 2026: 34(1-3)
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 31
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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), 1995/1996: 3(1-4), 1996: 4(1-4), 1997: 5(1-4), 1998: 6(1-4), 1999: 7(1-6), 2000: 8(1-6), 2001: 9(1-6), 2002: 10(1-6), 2003: 11(1-6), 2004: 12(1-6), 2005: 13(1-8), 2006: 14(1-12), 2007: 15(1-12), 2008: 16(1-12), 2009: 17(1-12), 2010: 18(1-12), 2011: 19(1-12), 2012: 20(1-8, 11-12), 2013: 21(1-10, 12), 2014: 22(1-12), 2015: 23(4-12), 2016: 24(1-12), 2017: 25(1-12), 2018: 26(1-12), 2019: 27(1-12), 2019/2020: 28(1-12), 2021: 29(1-12), 2022: 30(1-12), 2023: 31(1-12)
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LOCKSS Archive
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In Progress
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2026-04-06
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20, 27
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LOCKSS Archive
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Preserved
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2026-04-06
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21 to 26
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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 6); 2 (Suppl 1, 1 to 9, 11, 12); 3 (1 to 9, 11, 12); 5 (1 to 4); 6 (Suppl 1, 1 to 4); 7 (1 to 6); 8 (1 to 6); 9 (Suppl 1, 1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 8); 14 (1 to 9, 11, 12); 15 (1 to 9, 11, 12); 16 (Suppl 1, 1 to 9, 11, 12); 17 (1 to 9, 11, 12); 18 (Suppl 1, 1 to 9, 11, 12); 19 (Suppl 1, 1 to 9, 11, 12); 21 (1 to 9, 11, 12); 22 (Suppl 1, 1 to 9, 11, 12); 23 (1 to 9, 11, 12); 24 (Suppl 1, 1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (Suppl 1, 1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (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 : 1 (1 to 6); 2 (Suppl 1, 1 to 9, 11, 12); 3 (1 to 9, 11, 12); 5 (1 to 4); 6 (Suppl 1, 1 to 4); 7 (1 to 6); 8 (1 to 6); 9 (Suppl 1, 1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 8); 14 (1 to 9, 11, 12); 15 (1 to 9, 11, 12); 16 (Suppl 1, 1 to 9, 11, 12); 17 (1 to 9, 11, 12); 18 (Suppl 1, 1 to 9, 11, 12); 19 (Suppl 1, 1 to 9, 11, 12); 21 (1 to 9, 11, 12); 22 (Suppl 1, 1 to 9, 11, 12); 23 (1 to 9, 11, 12); 24 (Suppl 1, 1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (Suppl 1, 1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (1 to 9, 11, 12)
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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 : 5 (1-4); 6 (1-4); 7 (1-6); 8 (1-6); 9 (supplement-1, 1-6); 10 (1-6); 11 (1, 3-6); 12 (1-6); 13 (1-8); 14 (1-12); 15 (1-12); 16 (1-12); 17 (1-10, 12); 18 (supplement-1, 1-12); 19 (supplement-1, 1-12); 20 (1-12); 21 (1-9, 11, 12); 22 (1-12); 23 (1-12); 24 (supplement-1, 1-12); 25 (1-12); 26 (supplement-1, 1-12); 27 (1-11)
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