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Internet Archive
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Preserved
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2025-08-08
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1 to 13
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (2); 2 (, 1, 2); 3 (, 1); 4 (, 1); 5 (, 1); 6 (, 1, 2); 7 (, 1, 2); 8 (, 1, 2); 9 (, 1-2); 10 (, 1, 2); 11 (, 1); 12 (, 1, 2); 13 (, 1, 2); 14 (, 1-2, 3-4); 15 (, 1-2, 3-4); 16 (, 1-2, 3, 4); 17 (, 1 to 4); 18 (, 1 to 4); 19 (, 1 to 4); 20 (, 1, 2-3, 4); 21 (, 1, 2-3, 4); 22 (, 1-2, 3, 4); 23 (, 1, 2, 3-4); 24 (, 1); 27 (, 1, 2-3, 4-5, 6); 28 (, 4-5, 6); 29 (, 1, 2, 4 to 6); 30 (, 1, 2); 31 (, 1, 2-3, 4, 5-6); 32 (, 1, 2-3, 4 to 6); 33 (, 1 to 4, 5-6); 34 (, 1, 2-3, 5-6); 35 (, 1 to 3, 4-5, 6); 36 (, 1-2, 5, 6); 37 (, 1-2, 3, 4, 5-6); 38 (, 1-2, 3-4, 5, 6); 39 (, 1 to 6); 40 (, 1, 2-3, 4, 5-6); 41 (, 1, 2-3, 4, 5-6); 42 (, 1 to 4, 5-6); 43 (, 1); 1987; 1988; 1989; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 39
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 43
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Portico
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Preserved
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2026-02-12
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Preserved : 1987/1988: 2(1-2), 1989: 3(1), 1989: 4(1), 1989: 5(1), 1991/1992: 6(1-2), 1992/1993: 7(1-2), 1993: 8(1-2), 1994: 10(1-2), 1994: 11(1), 1995: 12(1-2), 1995/1996: 13(1-2), 1996: 15(3-4), 1997: 16(1-4), 1998: 17(1-4), 1999/2000: 18(1-4), 2000: 19(1-4), 2001: 20(1-4), 2002: 21(1-4), 2003: 22(1-4), 2004: 23(1-4), 2005: 24(1-6), 2006: 25(1-6), 2007: 26(1-6), 2008: 27(1-6), 2009: 28(1-6), 2010/2011: 29(1-6), 2011: 30(1-6), 2012: 31(1-6), 2013: 32(1-3, 2-6), 2014: 33(1-6), 2015: 34(1-6), 2016: 35(1-6), 2017: 36(1-6), 2018: 37(1-6), 2019: 38(1-6), 2020: 39(1-6), 2021: 40(1-6), 2022: 41(1-6), 2023: 42(1-6), 2024: 43(1-4)
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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, 2-3, 4); 3 (1, 2, 3-4, 5, 6); 4 (1, 2-3, 4, 5-6); 16 (1-2, 3, 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 21 (1, 2-3, 4); 22 (1-2, 3, 4); 23 (1, 2, 3-4); 24 (1, 2-3, 4-5, 6); 25 (1-2, 3, 4, 5-6); 26 (1, 2, 3-4, 5-6); 27 (1, 2-3, 4-5, 6); 28 (1 to 3, 4-5, 6); 29 (1 to 6); 31 (1, 2-3, 4, 5-6); 32 (1, 2-3, 4 to 6); 33 (1 to 4, 5-6); 34 (1, 2-3, 4, 5-6); 35 (1 to 3, 4-5, 6); 36 (1-2, 3 to 6); 37 (1-2, 3, 4, 5-6); 38 (1-2, 3-4, 5, 6); 39 (1 to 6); 41 (1, 2-3, 4, 5-6); 42 (1, 3, 4, 5-6)
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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 : 1 (1, 2); 2 (1, 2); 3 (1); 4; 5; 6 (2); 7 (1, 2); 8 (1, 2); 9 (1-2); 10 (2); 11 (1); 12 (2); 13 (1, 2); 14 (1-2, 3-4); 15 (1-2, 3-4); 16 (1-2, 3, 4); 17 (1-4); 18 (1-4); 19 (1-4); 20 (1, 2-3, 4); 21 (1, 2-3, 4); 22 (1-2, 3, 4); 23 (1, 2, 3-4); 24 (1, 2-3, 4-5, 6); 25 (1-2, 3, 4, 5-6); 26 (1, 2, 3-4, 5-6); 27 (1, 2-3, 4-5, 6)
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Library of Congress
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Preserved
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2025-04-07
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29 (1 to 6); 30 (1 to 3-4, 5, 6); 31 (1, 2-3, 4, 5-6); 32 (1, 2-3, 4 to 6); 33 (1 to 5-6); 34 (1, 2-3, 4, 5-6); 35 (1 to 4-5, 6); 36 (1-2, 3 to 6); 37 (1-2, 3 to 5-6); 38 (1-2, 3-4, 5, 6); 39 (1 to 6); 40 (1, 2-3, 4, 5-6); 41 (1, 2-3, 4, 5-6); 42 (1 to 5-6)
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