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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.37:1-4;vol.38:1-4;vol.39:1-4;vol.40:1-4;vol.41:1-4;vol.42:1-5;vol.43:1-6;vol.44:1-6;vol.45:1-6,sup.s1;vol.46:1-6,sup.s1,sup.s2;vol.47:1-6,sup.s1;vol.48:1-6;vol.49:1-6,sup.s1;vol.50:1-6,sup.s1;vol.51:1-6;vol.52:1-6;vol.53:1-6;vol.54:1-6;vol.55:1-6;vol.56:1-6,sup.S1;vol.57:1-6,sup.S1;vol.58:1-6,sup.S1;vol.59:1-6,sup.S1;vol.60:1-6
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Scholars Portal
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Preserved
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2026-03-19
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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 4); 8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 4); 12 (1 to 4); 13 (s1, 1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 30 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 5); 35 (1 to 4); 36 (1 to 4); 38 (3); 42 (1 to 5); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (s1, 1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (s1, 1 to 6); 50 (s1, 1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (S1, 1 to 6); 57 (S1, 1 to 6); 58 (S1, 1 to 6); 59 (S1, 1 to 6); 60 (1 to 6); 61 (S1, 1 to 6); 62 (S1, 1 to 6); 63 (S1, 1 to 6); 64 (1 to 6); 65 (S1, 1 to 6); 66 (S1, 1)
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Portico
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Preserved
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2026-05-07
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Preserved : 1961: 1(1-4), 1962: 2(1-4), 1963: 3(1-4), 1964: 4(1-4), 1965: 5(1-4), 1966: 6(1-4), 1967: 7(1-4), 1968: 8(1-4), 1969: 9(1-4), 1970: 10(1-4), 1971: 11(1-4), 1972: 12(1-4), 1972/1973: 13(1-4), 1974: 14(1-4), 1975: 15(1-4), 1976: 16(1-4), 1977: 17(1-4), 1978: 18(1-4), 1979: 19(1-4), 1980: 20(1-4), 1981: 21(1-4), 1982: 22(1-4), 1983: 23(1-4), 1984: 24(1-4), 1985: 25(1-4), 1986: 26(1-4), 1987: 27(1-4), 1988: 28(1-4), 1989: 29(1-4), 1990: 30(1-4), 1991: 31(1-4), 1992: 32(1-4), 1993: 33(1-4), 1994: 34(1-5), 1995: 35(1-4), 1996: 36(1-4), 1997: 37(1-4), 1998: 38(1-4), 1999: 39(1-4), 2000: 40(1-4), 2001: 41(1-4), 2002: 42(1-5), 2003: 43(1-6), 2004: 44(1-6), 2005: 45(1-6), 2006: 46(1-6), 2007: 47(1-6), 2008: 48(1-6), 2009: 49(1-6), 2010: 50(1-6), 2011: 51(1-6), 2012: 52(1-6), 2013: 53(1-6), 2014: 54(1-6), 2015: 55(1-6), 2016: 56(1, S1, 2-6), 2017: 57(1, S1, 2-6), 2018: 58(1, S1, 2-6), 2019: 59(1, S1, 2-6), 2020: 60(1-6), 2021: 61(1, S1, 2-6), 2022: 62(1, S1, 2-6), 2023: 63(1, S1, 2-6), 2024: 64(1-6), 2025: 65(1, S1, 2-6), 2026: 66(1, S1, 2-3)
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CLOCKSS Archive
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Preserved
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2026-05-04
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5, 31 to 66
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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 to 4); 5 (, 1 to 6); 6 (1 to 6); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 5); 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 6); 56 (, 1 to 6); 57 (, 1 to 6); 58 (S1, 1 to 6); 59 (S1, 1 to 6); 61 (S1, 1 to 6); 62 (S1, 1 to 5); 63 (S1, 1 to 5); 64 (1 to 5); 65 (S1, 1 to 3)
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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 to 4); 5 (, 1 to 6); 6 (1 to 6); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 5); 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 6); 56 (, 1 to 6); 57 (, 1 to 6); 58 (S1, 1 to 6); 59 (S1, 1 to 6); 61 (S1, 1 to 6); 62 (S1, 1 to 5); 63 (S1, 1 to 5); 64 (1 to 5); 65 (S1, 1 to 3)
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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 : 46 (s1, 1-6); 47 (1-6)
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