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Internet Archive
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Preserved
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2025-08-08
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1 to 6
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 10 (1 to 6); 11 (, 1 to 6); 12 (, 1 to 6); 13 (, 1 to 6); 14 (, 1 to 6); 15 (, 1 to 6); 16 (, 1 to 6); 17 (, 1 to 6); 18 (, 1 to 6); 19 (, 1 to 6); 20 (, 1 to 6); 21 (, 1 to 6); 22 (, 1 to 6); 23 (, 1 to 6); 24 (, 1, 2, 3-4, 5-6); 25 (, 1 to 3); 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2017
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LOCKSS Archive
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In Progress
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2026-02-09
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1 to 10, 12, 13
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CLOCKSS Archive
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In Progress
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2026-02-09
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1 to 18, 25 to 31
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LOCKSS Archive
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Preserved
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2026-02-09
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11, 14 to 31
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CLOCKSS Archive
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Preserved
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2026-02-09
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19 to 24
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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 1(1-6), 1991: 2(1-6), 1992: 3(1-6), 1993: 4(1-6, 6, S), 1994: 5(1-6), 1995: 6(1-6, 6, S), 1996: 7(1-6), 1997: 8(1-6, 6, S), 1998: 9(1-6), 1999: 10(1-6), 2000: 11(1-6), 2001: 12(1-6), 2002: 13(1-6), 2003: 14(1-6), 2004: 15(1-6), 2005: 16(1-6), 2006: 17(1-6), 2007: 18(1-6), 2008/2009: 19(1-6), 2009/2010: 20(1-6), 2010/2011: 21(1-6), 2011/2012: 22(1-6), 2012/2013/2014: 23(1-6), 2015: 24(1-6), 2017: 25(1-3), 2018: 26, 2019: 27, 2020: 28, 2021: 29, 2022: 30, 2023: 31
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 25 (2, 3); 26; 27; 28; 29; 30; 31; 2017; 2018; 2019; 2020; 2021; 2022; 2023
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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 (1-6); 2 (1-6); 3 (1-6); 4 (1-6); 5 (1-6); 6 (1-6); 7 (1-6); 8 (1-6); 9 (1-6); 10 (1-6); 11 (1-6); 12 (1-6); 13 (1-6); 14 (1-6); 15 (1-6); 16 (1-6); 17 (1-6); 18 (1-6); 19 (1-6); 20 (1-6); 21 (1-6); 22 (1-6); 23 (1-6); 24 (1, 2, 3-4, 5-6); 25 (1-3)
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