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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.32:1-8;vol.33:1-6,7-8;vol.34:1-4,7-10,5-6;vol.35:1-5,8-10,11-12,6-7;vol.36:1-3,6-7,11-12,4-5,8-10;vol.37:1-1,4-12,2-3;vol.38:1-2,6-6,9-12,3-5,7-8;vol.39:1-12;vol.40:3-3,6-9,12,10-11,1-2,4-5;vol.41:1-12;vol.42:1-12;vol.43:1-12;vol.44:1-12;vol.45:1-12;vol.46:1-12;vol.47:1-12;vol.48:1-12;vol.49:1-1,4-12,2-3;vol.50:1-8,11-12,9-10;vol.51:1-12;vol.52:1-12;vol.53:1-12;vol.54:1-12;vol.55:1-12;vol.56:1
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CLOCKSS Archive
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Preserved
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2026-02-09
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9, 16, 26 to 37, 41 to 61
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Portico
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Preserved
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2026-02-12
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Preserved : 1966: 1(1-4), 1967: 2(1-4), 1968: 3(1-4), 1969: 4(1-4), 1970: 5(1-4), 1971: 6(1-6), 1972: 7(1-12), 1973: 8(1-12), 1974: 9(1-12), 1975: 10(1-12), 1976: 11(1-12), 1977: 12(1-12), 1978: 13(1-12), 1979: 14(1-12), 1980: 15(1-12), 1981: 16(1-12)
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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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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 6); 7 (, 1-3, 4 to 12); 8 (, 1-3, 4 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 9, 10-11, 12); 24 (, 1 to 12); 25 (, 1 to 12); 26 (, 1 to 8); 27 (, 1 to 8); 28 (, 1 to 8); 29 (, 1 to 8); 30 (, 1 to 8); 31 (, 1 to 8); 32 (, 1 to 8); 33 (, 1 to 6, 7-8); 34 (, 1 to 4, 5-6, 7 to 10); 35 (, 1 to 5, 6-7, 8 to 10, 11-12); 36 (, 1 to 3, 4-5, 6); 37 (, 5 to 12); 38 (, 1, 2, 3-5, 6, 7-8, 9 to 12); 39 (, 1 to 12); 40 (, 1-2, 3, 4-5, 6 to 9, 10-11, 12); 41 (, 1 to 12); 42 (, 1 to 12); 43 (, 1 to 12); 44 (, 1 to 5, 7 to 12); 45 (, 1 to 12); 46 (, 1 to 12); 47 (, 1, 5 to 9, 11, 12); 48 (, 1 to 12); 49 (, 1, 2-3, 4 to 12); 50 (, 1 to 8, 9-10, 11, 12); 51 (, 1 to 12); 52 (, 1 to 12); 53 (, 1 to 12); 54 (, 1 to 6, 8 to 12); 55 (, 1 to 12); 56 (, 1 to 12); 57 (, 1 to 12); 58 (, 1 to 12); 59 (, 1 to 12); 60 (, 1 to 7); 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 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; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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Portico
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Preserved
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2026-02-12
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Preserved : 1982: 17(1-12), 1983: 18(1-12), 1984: 19(1-12), 1985: 20(1-12), 1986: 21(1-12), 1987: 22(1-12), 1988: 23(1-12), 1989: 24(1-12), 1990: 25(1-12), 1991: 26(1-8), 1992: 27(1-8), 1993: 28(1-8), 1994: 29(1-8), 1995: 30(1-8), 1996: 31(1-8), 1997: 32(1-8), 1998: 33(1-8), 1999: 34(1-10), 2000: 35(1-12), 2001: 36(1-12), 2002: 37(1-12), 2003: 38(1-12), 2004: 39(1-12), 2005: 40(1-12), 2006: 41(1-12), 2007: 42(1-12), 2008: 43(1-12), 2009: 44(1-12), 2010: 45(1-12), 2011: 46(1-12), 2012: 47(1-12), 2013: 48(1-12), 2014: 49(1-12), 2015: 50(1-12), 2016: 51(1-12), 2017: 52(1-12), 2018: 53(1-12), 2019: 54(1-12), 2020: 55(1-12), 2021: 56(1-12), 2022: 57(1-12), 2023: 58(1-12), 2024: 59(1-12), 2025: 60(1-12), 2026: 61(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 : 4 (1?2, 3, 4?5, 6 to 9, 12); 5 (1 to 8, 9-1, 11, 12); 6 (1 to 9); 32 (1 to 8); 33 (1 to 6, 7?8); 34 (1 to 4, 5?6, 7 to 9); 35 (1 to 5, 6?7, 8, 9, 11?12); 36 (1 to 3, 4?5, 6, 7, 8?1, 11, 12); 37 (1, 2?3, 4 to 9, 11, 12); 38 (1, 2, 3?5, 6, 7?8, 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1, 2-3, 4 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11, 12); 54 (1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1 to 9, 11, 12); 58 (1 to 9, 11, 12); 59 (1 to 9, 11, 12)
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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 : 4 (1?2, 3, 4?5, 6 to 9, 12); 5 (1 to 8, 9-1, 11, 12); 6 (1 to 9); 32 (1 to 8); 33 (1 to 6, 7?8); 34 (1 to 4, 5?6, 7 to 9); 35 (1 to 5, 6?7, 8, 9, 11?12); 36 (1 to 3, 4?5, 6, 7, 8?1, 11, 12); 37 (1, 2?3, 4 to 9, 11, 12); 38 (1, 2, 3?5, 6, 7?8, 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1, 2-3, 4 to 9, 11, 12); 51 (1 to 9, 11, 12); 52 (1 to 9, 11, 12); 53 (1 to 9, 11, 12); 54 (1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1 to 9, 11, 12); 58 (1 to 9, 11, 12); 59 (1 to 9, 11, 12)
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Library of Congress
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Preserved
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2025-04-07
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9 (8); 34 (2); 47 (1 to 12); 48 (1 to 12); 49 (1, 2-3, 4 to 12); 50 (1 to 9-10, 11, 12); 51 (1 to 12); 52 (1, 3, 5, 9 to 12); 53 (2 to 5, 8, 10, 11); 54 (1 to 3, 7, 8, 12); 55 (1, 2, 5, 7, 8, 10); 56 (1 to 12); 57 (1 to 12); 58 (8 to 11); 59 (4)
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