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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.37:1-1,4-6,2-3;vol.38:3-4,1-2,5-6,S1;vol.39:3-6,1-2;vol.40:1-2,3-4,5-6;vol.41:1-1,4-6,2-3;vol.42:1-1,5,2-4,6-7;vol.43:1-2,7,3-4,5-6;vol.44:4,1-3,5-6,7-8;vol.45:1-2,7-8,3-4,5-6;vol.46:3-4,10,1-2,5-6,7-9;vol.47:3-3,6-7,10,1-2,4-5,8-9;vol.48:4-4,8,1-3,5-7,9-10;vol.49:3-3,6-6,9-10,1-2,4-5,7-8;vol.50:1-2,8-10,3-5,6-7;vol.51:1-1,4-10,2-3;vol.52:1-4,7-10,5-6;vol.53:1-3,6-10,4-5;vol.54:1-3,7-10,4-6;vol.55:1-1,4-10,2-3;vol.56:1-2,5-5,9-10,3-4,6-8;vol.57:1-5,8-10,6-7;vol.58:1-1,4-5,9-10,2-3,6-8;vol.59:1-3,6-10,4-5;vol.60:1-4,7-10,5-6
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Portico
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Preserved
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2026-04-30
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Preserved : 1960: 1(1-4), 1962: 2(1-4), 1963: 3(1-4), 1964: 4(1-4), 1965: 5(1-6), 1966: 6(1-6), 1967: 7(1-6), 1968: 8(1-6), 1969: 9(1-6), 1970: 10(1-6), 1971: 11(1-6), 1972: 12(1-6), 1973: 13(1-6), 1974: 14(1-6), 1975: 15(1-6), 1976: 16(1-6), 1977: 17(1-6), 1978: 18(1-6), 1979: 19(1-6), 1980: 20(1-6), 1981: 21(1-6), 1982: 22(1-6), 1983: 23(1-6), 1984: 24(1-6), 1985: 25(1-6), 1986: 26(1-6), 1987: 27(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 (2 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1-2, 3, 4); 5 (1-2, 3, 4, 5-6); 6 (1 to 6); 7 (1-2, 3 to 6); 8 (1 to 6); 9 (1 to 6); 10 (1 to 3, 4-5, 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 4, 5-6); 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 3, 4-5, 6); 29 (1 to 3, 4-5, 6); 30 (1 to 6); 31 (1 to 6); 32 (1, 2, 3-4, 5, 6); 33 (1 to 4, 5-6); 34 (1, 2-3, 4 to 6); 35 (1 to 3, 4-5, 6); 36 (S1, 1, 2-3, 4 to 6); 37 (1, 2-3, 4 to 6); 38 (S1, 1-2, 3, 4, 5-6); 39 (1-2, 3 to 6); 40 (1-2, 3-4, 5-6); 41 (1, 2-3, 4); 42 (5, 6-7); 43 (1, 2, 3-4, 5-6, 7); 44 (1-3, 4, 5-6, 7-8); 45 (1, 2, 3-4, 5-6, 7, 8); 46 (1-2, 3, 4, 5-6, 7-9, 10); 47 (1-2, 3, 4-5, 6, 7, 8-9, 10); 48 (1-3, 4, 5-7, 8, 9-10); 49 (1-2, 3, 4-5, 6, 7-8, 9, 10); 50 (1, 2, 3-5, 6-7, 8 to 10); 51 (1, 2‐3, 4 to 10); 52 (1, 4, 5‐6, 7 to 10); 53 (1 to 3, 4‐5, 6 to 8); 54 (1 to 3, 4‐6, 7 to 10); 55 (1, 2‐3, 4 to 10); 56 (1, 2, 3‐4, 5, 6‐8, 9, 10); 57 (1 to 5, 6-7, 8 to 10); 58 (1, 2-3, 4, 5, 6-8, 9, 10); 59 (1 to 3, 4-5, 6 to 10); 60 (1 to 4, 5-6, 7 to 10); 61 (1 to 10); 62 (1 to 4, 5-6, 7 to 10); 63 (1, 2, 3-4, 5-6, 7, 8, 9-10); 64 (1 to 6, 7-8, 9, 10); 65 (1 to 6, 8-9, 10); 66 (1 to 3)
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CLOCKSS Archive
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Preserved
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2026-04-27
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12, 31 to 43, 45 to 66
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Portico
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Preserved
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2026-04-30
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Preserved : 1988: 28(1-6), 1989: 29(1-6), 1990: 30(1-6), 1991: 31(1-6), 1992: 32(1-6), 1993: 33(1-6), 1994: 34(1-6), 1995: 35(1-6), 1996: 36(1-6), 1997: 37(1-6), 1998: 38(3-4), 1999: 39(3-6), 2000: 40(1-6), 2001: 41(1, 4-6), 2002: 42(1-7), 2003: 43(1-7), 2004: 44(1-8), 2005: 45(1-8), 2006: 46(1-10), 2007: 47(1-10), 2008: 48(1-10), 2009: 49(1-10), 2010: 50(1-10), 2011: 51(1-10), 2012: 52(1-10), 2013: 53(1-10), 2014: 54(1-10), 2015: 55(1-10), 2016: 56(1-10), 2017: 57(1-10), 2018: 58(1-10), 2019: 59(1-10), 2020: 60(1-10), 2021: 61(1-10), 2022: 62(1-10), 2023: 63(1-10), 2024: 64(1-10), 2025: 65(1-10), 2026: 66(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 : 4 (1?2, 3?4, 5?6); 5 (1, 2, 3?5, 6?7, 8, 9); 6 (1 to 4, 5-6, 7 to 9); 37 (1, 2?3, 4 to 6); 38 (S1, 1?2, 3, 4, 5?6); 39 (1?2, 3 to 6); 41 (1, 2?3, 4 to 6); 42 (1, 2?4, 5, 6?7); 43 (1, 2, 3?4, 5?6, 7); 44 (1?3, 4, 5?6, 7?8); 45 (1, 2, 3?4, 5?6, 7, 8); 46 (1?2, 3, 4, 5?6, 7?9); 47 (1?2, 3, 4?5, 6, 7, 8?9); 48 (1?3, 4, 5?7, 8, 9?1); 49 (1?2, 3, 4?5, 6, 7?8, 9); 51 (1, 2?3, 4 to 9); 52 (1 to 4, 5?6, 7 to 9); 53 (1 to 3, 4?5, 6 to 9); 54 (1 to 3, 4?6, 7 to 9); 55 (1, 4 to 9); 56 (1, 2, 3?4, 5, 6?8, 9); 57 (1 to 5, 6-7, 8, 9); 58 (1, 2-3, 4, 5, 6-8, 9); 59 (1 to 3, 4-5, 6 to 9); 61 (1 to 9); 62 (1 to 4, 5-6, 7 to 9); 63 (1, 2, 3-4, 5-6, 7, 8, 9-1); 64 (1 to 6, 7-8, 9); 65 (1 to 7)
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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); 5 (1, 2, 3?5, 6?7, 8, 9); 6 (1 to 4, 5-6, 7 to 9); 37 (1, 2?3, 4 to 6); 38 (S1, 1?2, 3, 4, 5?6); 39 (1?2, 3 to 6); 41 (1, 2?3, 4 to 6); 42 (1, 2?4, 5, 6?7); 43 (1, 2, 3?4, 5?6, 7); 44 (1?3, 4, 5?6, 7?8); 45 (1, 2, 3?4, 5?6, 7, 8); 46 (1?2, 3, 4, 5?6, 7?9); 47 (1?2, 3, 4?5, 6, 7, 8?9); 48 (1?3, 4, 5?7, 8, 9?1); 49 (1?2, 3, 4?5, 6, 7?8, 9); 51 (1, 2?3, 4 to 9); 52 (1 to 4, 5?6, 7 to 9); 53 (1 to 3, 4?5, 6 to 9); 54 (1 to 3, 4?6, 7 to 9); 55 (1, 4 to 9); 56 (1, 2, 3?4, 5, 6?8, 9); 57 (1 to 5, 6-7, 8, 9); 58 (1, 2-3, 4, 5, 6-8, 9); 59 (1 to 3, 4-5, 6 to 9); 61 (1 to 9); 62 (1 to 4, 5-6, 7 to 9); 63 (1, 2, 3-4, 5-6, 7, 8, 9-1); 64 (1 to 6, 7-8, 9); 65 (1 to 7)
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Library of Congress
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Preserved
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2025-04-07
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51 (1, 4 to 10, 2‐3); 52 (1 to 4, 7 to 10, 5‐6); 53 (1 to 4‐5, 6 to 10); 54 (1 to 4‐6, 7 to 10); 55 (1, 2‐3, 4 to 10); 56 (1 to 3‐4, 5, 6‐8, 9); 57 (1, 2, 5, 8 to 10); 58 (1, 2-3, 4 to 6-8, 9, 10); 59 (1 to 4-5, 6, 7, 9, 10); 60 (1 to 5-6, 7 to 10); 61 (1 to 10); 62 (2 to 5-6, 7 to 10); 63 (1, 5-6, 7, 8); 64 (3)
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