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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 11 (4); 14 (5); 15 (1); 17 (4, 6); 18 (1, 3); 19 (4); 21 (1, 4, 6); 22 (4 to 6); 23 (1, 3 to 6); 24 (3 to 6); 25 (1, 3, 4); 26 (1, 3 to 5); 27 (3 to 6); 28 (1, 3 to 6); 29 (3, 4); 30 (1, 3, 4-5); 31 (1, 5, 6); 32 (1, 4-5, 6); 33 (4, 5); 34 (1); 35 (2, 6); 36 (1, 5, 6); 37 (1, 4 to 6); 38 (1, 6); 39 (1, 4 to 6); 40 (1)
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Portico
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Preserved
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2026-04-09
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Preserved : 1990: 4(2)
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CLOCKSS Archive
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Preserved
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2026-04-06
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4 to 40
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Portico
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Preserved
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2026-04-09
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Preserved : 1991: 5(6), 1992: 6(1-2)
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Portico
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Preserved
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2026-04-09
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Preserved : 1993: 7(6, 9)
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Portico
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Preserved
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2026-04-09
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Preserved : 1994: 8(5), 1995: 9(2-3, 10, 13, S 15), 1996: 10(1)
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Portico
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Preserved
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2026-04-09
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Preserved : 1997: 11(1-6), 1998: 12(1, 3-4, 6), 1999: 13(1-6), 2000: 14(1-6, S 26), 2001: 15(1-6), 2002: 16(1, 3-6), 2003: 17(1-6), 2004: 18(1-6), 2005: 19(1-6), 2006: 20(1-6), 2007: 21(2-3, 6), 2008: 22(4-6), 2009: 23(1-6), 2010: 24(1-3, 5-6), 2011: 25(1-5), 2012: 26(2, 4-6), 2013: 27(1-6), 2014: 28(1-3), 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(1-5), 2025: 39(1-2, 4-6), 2026: 40(1)
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LOCKSS Archive
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In Progress
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2026-04-06
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26, 33
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LOCKSS Archive
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Preserved
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2026-04-06
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27 to 32
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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 : 6; 7 (supplement-9); 9; 11 (1-6); 12 (1, 3, 4); 13 (1-6); 14 (1-6); 15 (1-6); 16 (1, 3-6); 17 (1-6); 18 (1-6); 19 (1-6); 20 (1-6); 21 (2-6); 22 (1-6); 23 (1, 3-6); 24 (1-6); 25 (1-6); 26 (1-6); 27 (1-6); 28 (1, 3-6); 29 (1, 3, 4, 5-6); 30 (1-3, 4-5, 6); 31 (1, 2, 3-4, 5, 6); 32 (1-3, 4-5, 6); 33 (1, 2-3, 4, 5)
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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 6); 3 (1 to 4, 6); 11 (1 to 6, 22); 12 (1 to 6, 23); 13 (1 to 6, 24, 25); 14 (1 to 6, 26); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (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 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 5); 31 (1 to 3, 5, 6); 32 (1 to 3, 4-5, 6); 33 (1, 2-3, 4 to 6); 34 (1, 2-3, 4, 5-6); 35 (1, 2, 3-4, 5, 6); 36 (1, 2-3, 4 to 6); 37 (1, 2-3, 4 to 6); 38 (1, 2, 4 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 6); 3 (1 to 4, 6); 11 (1 to 6, 22); 12 (1 to 6, 23); 13 (1 to 6, 24, 25); 14 (1 to 6, 26); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (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 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 5); 31 (1 to 3, 5, 6); 32 (1 to 3, 4-5, 6); 33 (1, 2-3, 4 to 6); 34 (1, 2-3, 4, 5-6); 35 (1, 2, 3-4, 5, 6); 36 (1, 2-3, 4 to 6); 37 (1, 2-3, 4 to 6); 38 (1, 2, 4 to 6)
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