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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 : 4 (6); 5 (1-3); 6 (2); 7 (4); 10 (2, 3, 5); 12 (6); 13 (3, 4); 14 (5); 15; 17 (6); 18 (1-4, 6); 19 (2); 22 (5); 23 (3); 24 (2, 3); 25 (2); 26 (3, 6); 28 (2); 29 (1); 31 (2, 3, 5); 32 (1-6); 33 (1-6); 34 (1-6); 35 (1-6)
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British Library
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Preserved
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2019-09-18
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Preserved : 30 (1 to 6), 31 (1 to 6), 32 (1 to 6), 33 (1 to 6), 34 (1 to 5)
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 15 (1 to 6); 16 (, 2 to 4); 17 (, 1_suppl, 2 to 6); 18 (, 1 to 4, 6); 19 (, 2); 20 (, 1 to 6); 22 (, 5); 23 (, 1 to 4, 6); 25 (, 1 to 3, 5, 6); 26 (, 3, 6); 28 (, 2); 29 (, 5, 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 to 6); 41 (, 1 to 4); 1999; 2000; 2001; 2002; 2003; 2004; 2006; 2007; 2009; 2010; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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Internet Archive
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Preserved
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2025-08-08
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1 to 24
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Portico
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Preserved
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2026-02-12
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Preserved : 1985: 1(1-6), 1986: 2(1-6), 1987: 3(1-6), 1988: 4(1-6), 1989: 5(1-6), 1990: 6(1-6), 1991: 7(1-6), 1992: 8(1-6), 1993: 9(1-6), 1994: 10(1-6), 1995: 11(1-6), 1996: 12(1-6), 1997: 13(1-6), 1998: 14(1-2, 5-6), 1999: 15(1-6), 2000: 16(1-6), 2001: 17(1, 1, S, 2-6), 2002: 18(1-6), 2003: 19(1-6), 2004: 20(1-6), 2005: 21(1-6), 2006: 22(1-6), 2007: 23(1-6), 2008: 24(1-6), 2009: 25(1-6), 2010: 26(1-6), 2011: 27(1-6), 2012: 28(1-6), 2013: 29(1-6), 2014: 30(1-6), 2015: 31(1-6), 2016: 32(1-6), 2017: 33(1-6), 2018: 34(1-6), 2019: 35(1-6), 2020: 36(1-6), 2021: 37(1-6), 2022: 38(1-6), 2023: 39(1-6), 2024: 40(1-6), 2025: 41(1-6), 2026: 42(1)
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CLOCKSS Archive
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In Progress
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2026-02-09
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16 to 23, 32 to 41
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LOCKSS Archive
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In Progress
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2026-02-09
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16 to 18, 41
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LOCKSS Archive
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Preserved
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2026-02-09
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19 to 40
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CLOCKSS Archive
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Preserved
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2026-02-09
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24 to 31
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