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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 6); 2 (, 1 to 12); 3 (, 1 to 12); 4 (, 1 to 12); 5 (, 1 to 12); 6 (, 1 to 12); 7 (, 1 to 12); 8 (, 1 to 12); 9 (, 1 to 12); 10 (, 1 to 12); 11 (, 1 to 12); 12 (, 1 to 12); 13 (, 1 to 12); 14 (, 1 to 12); 15 (, 1 to 12); 16 (, 1 to 12); 17 (, 1 to 12); 18 (, 1 to 12); 19 (, 1 to 12); 20 (, 1 to 12); 21 (, 1 to 12); 22 (, 1 to 12); 23 (, 1 to 12); 24 (, 1 to 12); 25 (, 1 to 12); 26 (, 1 to 12); 27 (, 1 to 12); 28 (, 1 to 12); 29 (, 1 to 12); 30 (, 1 to 12); 31 (, 1 to 12); 32 (, 1 to 6); 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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1 to 14
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.10:1-12;vol.11:1-12;vol.12:1-12,sup.s1;vol.13:1-12,sup.s5;vol.14:1-12,sup.s1;vol.15:1-12,sup.s1;vol.16:1-12,sup.s1,sup.s2;vol.17:1-12,sup.s1,sup.s2;vol.18:1-12,sup.s1,sup.s2;vol.19:1-12,sup.s1;vol.20:1-12,sup.s1;vol.21:1-12,sup.s1;vol.22:1-12,sup.S1;vol.23:1-12,sup.S1;vol.24:1-12,sup.S1;vol.25:1-12,sup.S1;vol.26:1-12,sup.S1;vol.27:1-12,sup.S1;vol.4:1-12;vol.5:1-12;vol.6:1-12;vol.7:1-12;vol.8:1-12;vol.9:1-12
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 33
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Portico
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Preserved
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2026-02-12
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Preserved : 1994: 1(1-6), 1995: 2(1-12), 1996: 3(1-12), 1997: 4(1-12), 1998: 5(1-12), 1999: 6(1-12), 2000: 7(1-12), 2001: 8(1-12), 2002: 9(1-12), 2003: 10(1-12), 2004: 11(1-12), 2005: 12(1-12), 2006: 13(1-12), 2007: 14(1-12), 2008: 15(1-12), 2009: 16(1-12), 2010: 17(1-12), 2011: 18(1-12), 2012: 19(1-12), 2013: 20(1-12), 2014: 21(1-12), 2015: 22(1, S1, 2-12), 2016: 23(1, S1, 2-12), 2017: 24(1, S1, 2-12), 2018: 25(1, S1, 2-12), 2019: 26(1, S1, 2-12), 2020: 27(1, S1, 2-12), 2021: 28(1, S1, 2-12), 2022: 29(1, S1, 2-12), 2023: 30(1, S1, 2-12), 2024: 31(1, S1, 2-12), 2025: 32(1, S1, 2-12), 2026: 33(1-2)
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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 9, 11, 12); 2 (, 1 to 9, 11, 12); 3 (S1, 1 to 9, 11, 12); 4 (1 to 9, 11, 12); 5 (1 to 9, 11, 12); 6 (1 to 9, 11, 12); 7 (1 to 9, 11, 12); 8 (1 to 9, 11, 12); 9 (1 to 9, 11, 12); 11 (1 to 9, 11, 12); 12 (s1, 1 to 9, 11, 12); 13 (s5, 1 to 9, 11, 12); 14 (s1, 1 to 9, 11, 12); 15 (, 1 to 9, 11, 12); 16 (, 1 to 9, 11, 12); 17 (s1, 1 to 9, 11, 12); 18 (s1, 1 to 9, 11, 12); 19 (, 1 to 9, 11, 12); 21 (, 1 to 9, 11, 12); 22 (, 1 to 9, 11, 12); 23 (, 1 to 9, 11, 12); 24 (, 1 to 9, 11, 12); 25 (, 1 to 9, 11, 12); 26 (S1, 1 to 9, 11, 12); 27 (S1, 1 to 9, 11, 12); 28 (S1, 1 to 9, 11, 12); 29 (S1, 1 to 9, 11, 12); 31 (S1, 1 to 9, 11, 12); 32 (S1, 1 to 9)
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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 9, 11, 12); 2 (, 1 to 9, 11, 12); 3 (S1, 1 to 9, 11, 12); 4 (1 to 9, 11, 12); 5 (1 to 9, 11, 12); 6 (1 to 9, 11, 12); 7 (1 to 9, 11, 12); 8 (1 to 9, 11, 12); 9 (1 to 9, 11, 12); 11 (1 to 9, 11, 12); 12 (s1, 1 to 9, 11, 12); 13 (s5, 1 to 9, 11, 12); 14 (s1, 1 to 9, 11, 12); 15 (, 1 to 9, 11, 12); 16 (, 1 to 9, 11, 12); 17 (s1, 1 to 9, 11, 12); 18 (s1, 1 to 9, 11, 12); 19 (, 1 to 9, 11, 12); 21 (, 1 to 9, 11, 12); 22 (, 1 to 9, 11, 12); 23 (, 1 to 9, 11, 12); 24 (, 1 to 9, 11, 12); 25 (, 1 to 9, 11, 12); 26 (S1, 1 to 9, 11, 12); 27 (S1, 1 to 9, 11, 12); 28 (S1, 1 to 9, 11, 12); 29 (S1, 1 to 9, 11, 12); 31 (S1, 1 to 9, 11, 12); 32 (S1, 1 to 9)
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