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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); 2 (1, 2); 3 (1, 2); 4 (3, 4); 5 (1 to 4); 6 (2, 3); 7 (1 to 3); 8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 30 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 40 (1)
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Portico
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Preserved
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2026-04-16
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Preserved : 1987: 1(1-2), 1988: 2(1-2), 1989: 3(1-2), 1990: 4(1-4), 1991: 5(1-4), 1992: 6(1-4), 1993: 7(1-4), 1994: 8(1-4), 1995: 9(1-4), 1996: 10(1-4), 1997: 11(1-2)
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CLOCKSS Archive
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Preserved
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2026-04-13
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1 to 40
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Portico
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Preserved
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2026-04-16
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Preserved : 1998: 12(4), 1999: 13(1, 3), 2000: 14(1)
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Portico
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Preserved
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2026-04-16
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Preserved : 2001: 15(1, 3-4), 2002: 16(1-4), 2003: 17(1-4), 2004: 18(1, 3-4), 2005: 19(2-4), 2006: 20(1-4), 2007: 21(1-3), 2008: 22(1-4), 2009: 23(1-4), 2010: 24(2-6), 2011: 25(1, 3-6), 2012: 26(1-6), 2013: 27(1-4, 6), 2014: 28(1-6), 2015: 29(1-6), 2016: 30(1-6), 2017: 31(1-6), 2018: 32(1-6), 2019: 33(1-6), 2020: 34(1-6), 2021: 35(1-6), 2022: 36(1-6), 2023: 37(1-6), 2024: 38(1-6), 2025: 39(1-6), 2026: 40(1-2)
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LOCKSS Archive
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In Progress
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2026-04-13
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26, 33
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LOCKSS Archive
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Preserved
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2026-04-13
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27 to 32
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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 : 2 (1 to 4); 3 (1 to 6); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6)
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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 4); 3 (1 to 6); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6)
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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 : 13 (1-4); 14 (1-4); 15 (1-4); 16 (1-4); 17 (1-4); 18 (1-4); 19 (1-4); 20 (1-4); 21 (1-4); 22 (1-4); 23 (1-4); 24 (1-6); 25 (1-6); 26 (1-6); 27 (1-6); 28 (1-6); 29 (1-6); 30 (1-6); 31 (1-6); 32 (1-6); 33 (1-5)
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