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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 to 4); 3 (, 1 to 4); 4 (, 1 to 5); 5 (, 1 to 5); 6 (, 1 to 5); 7 (, 1 to 5); 8 (, 1 to 6); 9 (, 1 to 6); 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 3, 5, 6); 20 (, 1 to 6); 21 (, 2 to 6); 22 (, 1, 2, 4, 5); 23 (, 1 to 5); 24 (, 2 to 6); 25 (, 1 to 6); 26 (, 1 to 6); 27 (, 1 to 6); 28 (, 1 to 6); 29 (, 1 to 3, 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 3); 1991; 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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1 to 13
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.10:1-6;vol.11:1-6;vol.12:1-6;vol.13:1-6;vol.14:1-6;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.21:1-6;vol.22:1-6;vol.23:1-6;vol.24:1-6;vol.25:1-6;vol.26:1-6;vol.27:1-6;vol.28:1-6;vol.29:1-6;vol.30:1-6;vol.31:1;vol.7:1-5;vol.8:1-6;vol.9:1-6
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 36
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Portico
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Preserved
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2026-02-12
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Preserved : 1991: 1(1-4), 1992: 2(1-4), 1993: 3(1-4), 1994: 4(1-5), 1995: 5(1-5), 1996: 6(1-5), 1997: 7(1-5), 1998: 8(1-6), 1999: 9(1-6), 2000: 10(1-6), 2001: 11(1-6), 2002: 12(1-6), 2003: 13(1-6), 2004: 14(1-6), 2005: 15(1-6), 2006: 16(1-6), 2007: 17(1-6), 2008: 18(1-6), 2009: 19(1-6), 2010: 20(1-6), 2011: 21(1-6), 2012: 22(1-6), 2013: 23(1-6), 2014: 24(1-6), 2015: 25(1-6), 2016: 26(1-6), 2017: 27(1-6), 2018: 28(1-6), 2019: 29(1-6), 2020: 30(1-6), 2021: 31(1-6), 2022: 32(1-6), 2023: 33(1-6), 2024: 34(1-6), 2025: 35(1-6), 2026: 36(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 6); 2 (1 to 6); 3 (1 to 6); 6 (1 to 5); 7 (1 to 5); 8 (1 to 6); 9 (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); 21 (1 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); 35 (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 6); 2 (1 to 6); 3 (1 to 6); 6 (1 to 5); 7 (1 to 5); 8 (1 to 6); 9 (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); 21 (1 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); 35 (1 to 5)
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