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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, 2, 3-4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 6); 8 (1 to 6); 9 (1 to 6); 10 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 8); 15 (1 to 12); 16 (1 to 3, 4-5, 6 to 12); 17 (1-2, 3-4, 5 to 7, 10 to 12); 18 (1/2, 3 to 10, 11-12); 19 (1 to 3, 4-5, 6, 7-9); 20 (1 to 6, 7-8, 9); 21 (1-2, 3-4, 5 to 7, 8-9); 22 (1-2, 3, 4, 7-9); 23 (1, 3-4, 5-6, 7-8, 9); 24 (1, 2-3, 4-5, 6-7, 8, 9); 25 (1 to 9); 26 (1 to 9); 27 (1 to 6, 7-9); 28 (1, 2, 3-4, 5 to 7, 8-9); 29 (1, 2-3, 4, 5-6, 7, 8-9); 30 (1 to 9); 31 (1 to 5, 6-7, 8, 9); 32 (1-2, 3-4, 5 to 9); 33 (1 to 6); 34 (Suppl, 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 to 6); 41 (1 to 3, 4-5, 6); 42 (1, 2, 3-4, 5-6); 43 (1)
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LOCKSS Archive
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Preserved
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2026-03-30
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1 to 36
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CLOCKSS Archive
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Preserved
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2026-03-30
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1 to 43
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Portico
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Preserved
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2026-04-02
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Preserved : 1984/1994: 1(1-2), 1985: 2(1-4), 1986: 3(1-4), 1987: 4(1-4), 1988: 5(1-4), 1989: 6(1-4), 1990: 7(1-6), 1991: 8(1-6), 1992: 9(1-6), 1993: 10(1-6), 1994: 11(1-6), 1995: 12(1-6), 1996: 13(1-6), 1997: 14(2, 7), 1998: 15(5-7, 10)
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Portico
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Preserved
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2026-04-02
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Preserved : 1999: 16(12), 2000: 17(6-10, 12), 2001: 18(10), 2002: 19(2), 2003: 20(1-2, 5-6, 9)
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Portico
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Preserved
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2026-04-02
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Preserved : 2004: 21(1-2, 5), 2005: 22(1-2, 4, 7-9), 2006: 23(1, 3-4, 7-9), 2007: 24(2-5, 8), 2008: 25(1-9), 2009: 26(1-9), 2010: 27(1-9), 2011: 28(1-9), 2012: 29(1-4, 7-9), 2013: 30(1-9), 2014: 31(1-9), 2015: 32(1-9), 2016: 33(1-6), 2017: 34(1, S 1, 2-6), 2018: 35(1-6), 2019: 36(1-6), 2019/2020: 37(1-6), 2021: 38(1-6), 2022: 39(1-6), 2023: 40(1-6), 2024: 41(1-6), 2025: 42(2-6), 2026: 43(1)
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Portico
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Preserved
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2026-04-02
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Preserved : 1994: 1(1, 3-4)
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Library of Congress
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Preserved
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2025-04-07
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35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 40 (1 to 6); 41 (1 to 3)
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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 (2 to 7, 9); 3 (1 to 9); 4 (1 to 6); 14 (1 to 8); 15 (1 to 9, 11, 12); 16 (1 to 4, 6 to 9, 11, 12); 17 (1, 3, 5 to 7, 11, 12); 18 (1, 3 to 9, 11); 19 (1 to 4, 6, 7); 21 (1, 3, 5 to 8); 22 (1, 3, 4, 7); 23 (1, 3, 5, 7, 9); 24 (1, 2, 4, 6, 8, 9); 25 (1 to 9); 26 (1 to 9); 27 (1 to 7); 28 (1 to 3, 5 to 7); 29 (1, 2, 4, 5, 7, 8); 31 (1 to 6, 8, 9); 32 (1, 3, 5 to 9); 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); 41 (1 to 4, 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 (2 to 7, 9); 3 (1 to 9); 4 (1 to 6); 14 (1 to 8); 15 (1 to 9, 11, 12); 16 (1 to 4, 6 to 9, 11, 12); 17 (1, 3, 5 to 7, 11, 12); 18 (1, 3 to 9, 11); 19 (1 to 4, 6, 7); 21 (1, 3, 5 to 8); 22 (1, 3, 4, 7); 23 (1, 3, 5, 7, 9); 24 (1, 2, 4, 6, 8, 9); 25 (1 to 9); 26 (1 to 9); 27 (1 to 7); 28 (1 to 3, 5 to 7); 29 (1, 2, 4, 5, 7, 8); 31 (1 to 6, 8, 9); 32 (1, 3, 5 to 9); 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); 41 (1 to 4, 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 : 14 (2-8); 15 (1-12); 16 (1-3, 4-5, 6-12); 17 (1, 3, 5-7, 10-12); 18 (1, 3-11); 19 (1-4, 6, 7); 20 (1-7, 9); 21 (1, 3, 5, 6, 8-9); 22 (1-2, 3, 7-9); 23 (1-2, 3-4, 5-6, 7-8, 9); 24 (1, 2-3, 4-5, 6-7, 8, 9); 25 (1-9); 26 (1-9); 27 (1-6, 7-9); 28 (1, 2, 3-4, 5-7, 8-9); 29 (1, 2-3, 4, 5-6, 7, 8-9); 30 (1-9); 31 (1-5, 6-7, 8, 9); 32 (1-2, 3-4, 5-9); 33 (1-6); 34 (supplement-1, 1-6); 35 (1-6); 36 (1-5); 69 (2)
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