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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 4); 5 (, 1 to 4); 6 (, 1 to 4); 7 (, 1 to 6); 8 (, 1 to 6); 9 (, 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 to 6); 25 (, 1 to 4, 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); 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018
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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,sup.s5;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,sup.s5;vol.20:1-6;vol.21:1-6,sup.s1;vol.22:1-6,sup.s1;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.31:1-6
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Portico
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Preserved
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2026-02-12
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Preserved : 2019: 2019, 2020: 2020, 2021: 2021, 2022: 2022, 2023: 2023, 2024: 2024, 2025: 2025, 2026: 2026
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Portico
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Preserved
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2026-02-12
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Preserved : 1988: 1(1-4), 1989: 2(1-4), 1990: 3(1-4), 1991: 4(1-4), 1992: 5(1-4), 1993: 6(1-4), 1994: 7(1-6), 1995: 8(1-6), 1996: 9(1-6), 1997: 10(1-6), 1998: 11(1-6), 1999: 12(1-6), 2000: 13(1-6), 2001: 14(1-6), 2002: 15(1-6), 2003: 16(1-6), 2004: 17(1-6), 2005: 18(1-6), 2006: 19(1-6), 2007: 20(1-6), 2008: 21(1-6), 2009: 22(1-6), 2010: 23(1-6), 2011: 24(1-6), 2012: 25(1-6), 2013: 26(1-6), 2014: 27(1-6), 2015: 28(1-6), 2016: 29(1-6), 2017: 30(1-6), 2018: 31(1-6), 2019: 2019(1), 2020: 2020(1), 2021: 2021(1), 2022: 2022(1), 2023: 2023(1), 2024: 2024(1), 2025: 2025(1), 2026: 2026(1)
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CLOCKSS Archive
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Preserved
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2026-02-09
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4 to 31
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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); 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)
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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); 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)
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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 : 19 (s5, 1-6); 20 (1-6)
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