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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 (, 3, 4); 8 (, 1, 2‐3, 4); 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 6); 20 (, 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 4, 5-6); 29 (, 1 to 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); 1977; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 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
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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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.28:1-4,5-6;vol.29:1-6;vol.30:1-6;vol.31:1-6;vol.32:1-6;vol.33:1-6,sup.s1;vol.34:1-6;vol.35:1-6;vol.36:1-6;vol.37:1-6;vol.38:1-6;vol.39:1-6
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CLOCKSS Archive
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In Progress
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2026-02-09
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2017, 2018, 2021 to 2023
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LOCKSS Archive
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Preserved
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2026-02-09
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2017 to 2023
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Portico
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Preserved
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2026-02-12
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Preserved : 2017: 2017, 2018: 2018, 2019: 2019, 2020: 2020, 2021: 2021, 2022: 2022, 2023: 2023, 2024: 2024, 2025: 2025, 2026: 2026
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CLOCKSS Archive
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Preserved
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2026-02-09
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2019, 2020
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Portico
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Preserved
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2026-02-12
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Preserved : 1977: 1(1-4), 1979: 2(1-4), 1980: 3(1-4), 1981: 4(1-4), 1982: 5(1-4), 1983/1984: 6(1-4), 1985: 7(3-4), 1985/1986: 8(1-4), 1986: 9(1-6), 1987/1988: 10(1-6), 1988/1989: 11(1-6), 1989: 12(1-6), 1990: 13(1-6), 1991: 14(1-6), 1992: 15(1-6), 1993: 16(1-6), 1994: 17(1-6), 1995: 18(1-6), 1996: 19(1-6), 1997: 20(1-6), 1998: 21(1-6), 1999: 22(1-6), 2000: 23(1-6), 2001: 24(1-6), 2002: 25(1-6), 2003: 26(1-6), 2004: 27(1-6), 2005: 28(1-4), 2006: 29(1-6), 2007: 30(1-6), 2008: 31(1-6), 2009: 32(1-6), 2010: 33(1-6), 2011: 34(1-6), 2012: 35(1-6), 2013: 36(1-6), 2014: 37(1-6), 2015: 38(1-6), 2016: 39(1-6), 2017: 2017(1), 2018: 2018(1), 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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14 to 39
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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 : 2 (1 to 6); 3 (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 4, 5?6); 29 (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 3, 5, 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 : 2 (1 to 6); 3 (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 4, 5?6); 29 (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 3, 5, 6)
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Library of Congress
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Preserved
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2025-04-07
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34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 2023; 2024
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