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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.27:1-6;vol.28:1-6;vol.29:1-6
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Portico
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Preserved
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2026-02-12
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Preserved : 1971: 1(1-2), 1972: 2(1-4), 1973: 3(1-4), 1974: 4(1-4), 1975: 5(1-6), 1976: 6(1-6), 1977: 7(1-6), 1978: 8(1-6), 1979: 9(1-6), 1980: 10(1-7), 1981: 11(1-7), 1982: 12(1-6), 1983: 13(1-7), 1984: 14(1-7), 1985: 15(1-7), 1986: 16(1-7), 1987: 17(1-7), 1988: 18(1-7), 1989: 19(1-7), 1990: 20(1-7), 1991: 21(1-7), 1992: 22(1-7), 1993: 23(1-7), 1994: 24(1-7), 1995: 25(1-7), 1996: 26(1-6), 1997: 27(1-6)
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 30 (1 to 5); 31 (, 1 to 6); 32 (, 1 to 3, 4-5, 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); 40 (, 1, 2, 3-4, 5, 6); 41 (, 1 to 6); 42 (, 1 to 4, 6); 43 (, 1 to 6); 44 (, 1 to 6); 45 (, 1 to 6); 46 (, 1 to 6); 47 (, 1 to 6); 48 (, 1 to 6); 49 (, 1 to 6); 50 (, 1 to 6); 51 (, 1 to 6); 52 (, 1 to 6); 53 (, 1 to 6); 54 (, 1 to 6); 55 (, 1 to 3); 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 36
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CLOCKSS Archive
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Preserved
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2026-02-09
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12, 21 to 55
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Portico
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Preserved
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2026-02-12
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Preserved : 2003: 33(1-5), 2004: 34(1-5), 2005: 35(1-5), 2006: 36(1-5), 2007: 37(1-6), 2008: 38(1-6), 2009: 39(1-6), 2010: 40(1-6), 2011: 41(1-6), 2012: 42(1-6), 2013: 43(1-6), 2014: 44(1-6), 2015: 45(1-6), 2016: 46(1-6), 2017: 47(1-6), 2018: 48(1-6), 2019: 49(1-6), 2020: 50(1-6), 2021: 51(1-6), 2022: 52(1-6), 2023: 53(1-6), 2024: 54(1-6), 2025: 55(1-6), 2026: 56(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 : 3 (1 to 6); 4 (1, 2, 3?4, 5, 6); 5 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 3, 4?5, 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); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 4)
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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 : 3 (1 to 6); 4 (1, 2, 3?4, 5, 6); 5 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 3, 4?5, 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); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 5)
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Library of Congress
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Preserved
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2025-04-07
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42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1, 3 to 6); 48 (1 to 6); 49 (3, 5, 6); 50 (2 to 6); 51 (2 to 6); 52 (1 to 6); 53 (4, 5); 54 (1, 2)
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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 : 36 (2-6); 37 (3-6)
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