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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1 to 4); 2 (, 1, 2, 3‐4); 3 (, 1 to 4); 4 (, 1 to 4); 5 (, 1, 2, 3‐4); 6 (, 1 to 4); 7 (, 1, 2, 3-4); 8 (, 1 to 4); 9 (, 1 to 4); 10 (, 1 to 4); 11 (, 1 to 6); 12 (, 1 to 3, 4-5, 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, 2‐3, 4, 5); 22 (, 1 to 5); 23 (, 2 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 6); 30 (, 1 to 6); 31 (, 1 to 6); 32 (, 1 to 6); 33 (, 1 to 6); 34 (, 1 to 4); 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 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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9 to 10
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.10:1-4,sup.s1;vol.11:1-6;vol.12:1-3,6,4-5;vol.13:1-6,sup.s1;vol.14:1-6,sup.s1;vol.15:1-6;vol.16:1-6;vol.17:1-6;vol.18:1-6;vol.19:1-6;vol.20:1-6;vol.21:1-1,4-6,2-3;vol.22:1-6;vol.23:1-6;vol.24:1-6,sup.S1;vol.25:1-6,sup.S1;vol.26:1-6;vol.27:1-6;vol.28:1-6;vol.29:1-6;vol.30:1;vol.6:1-4;vol.7:1-2,3-4;vol.8:1-4,sup.s1,sup.s2;vol.9:1-4
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 35
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Portico
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Preserved
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2026-02-12
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Preserved : 1992: 1(1-4), 1993: 2(1-4), 1994: 3(1-4), 1995: 4(1-4), 1996: 5(1-4), 1997: 6(1-3), 1998: 7(1-2), 1999: 8(1-4), 2000: 9(1-4), 2001: 10(1-4), 2002: 11(1-6), 2003: 12(1-3, 6), 2004: 13(1-6), 2005: 14(1-6), 2006: 15(1-6), 2007: 16(1-6), 2008: 17(1-6), 2009: 18(1-6), 2010: 19(1-6), 2011: 20(1-6), 2012: 21(1-6), 2013: 22(1-6), 2014: 23(1-6), 2015: 24(1, S1, 2-6), 2016: 25(1, S1, 2-6), 2017: 26(1-6), 2018: 27(1-6), 2019: 28(1-6), 2020: 29(1-6), 2021: 30(1-6), 2022: 31(1-6), 2023: 32(1-6), 2024: 33(1-6), 2025: 34(1-6), 2026: 35(1)
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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 : 1 (, 1 to 4); 2 (1 to 6); 3 (1 to 6); 6 (1 to 4); 7 (1, 2, 3?4); 8 (, 1 to 4); 9 (1 to 4); 11 (1 to 6); 12 (1 to 3, 4?5, 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); 21 (1, 2?3, 4 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 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 5)
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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 : 1 (, 1 to 4); 2 (1 to 6); 3 (1 to 6); 6 (1 to 4); 7 (1, 2, 3?4); 8 (, 1 to 4); 9 (1 to 4); 11 (1 to 6); 12 (1 to 3, 4?5, 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); 21 (1, 2?3, 4 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 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 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 : 15 (1-6); 16 (1-6)
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