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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.70:1-12;vol.71:1-12;vol.72:1-12;vol.73:1-12;vol.74:1-12;vol.75:1-12;vol.76:1-12
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Portico
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Preserved
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2026-04-09
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Preserved : 2014: 70(1-12), 2015: 71(1-12), 2016: 72(1-12), 2017: 73(1-12), 2018: 74(1-12), 2019: 75(1-12), 2020: 76(1-12), 2021: 77(1-12), 2022: 78(1-12), 2023: 79(1-12), 2024: 80(1-12), 2025: 81(1-12), 2026: 82(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 : 8 (1 to 3, 5 to 9, 11, 12); 74 (1, 3 to 9, 11, 12); 75 (1, 2, 4 to 9, 11, 12); 76 (1 to 9, 11, 12); 77 (1 to 9, 11, 12); 78 (1 to 8, 11, 12); 79 (1 to 9, 11, 12); 81 (1 to 9)
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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 : 8 (1 to 3, 5 to 9, 11, 12); 74 (1, 3 to 9, 11, 12); 75 (1, 2, 4 to 9, 11, 12); 76 (1 to 9, 11, 12); 77 (1 to 9, 11, 12); 78 (1 to 8, 11, 12); 79 (1 to 9, 11, 12); 81 (1 to 9)
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 39 (1 to 12); 40 (1 to 12); 41 (1 to 12); 42 (1 to 12); 43 (1 to 12); 44 (1 to 12); 45 (1 to 12); 46 (1 to 12); 47 (1 to 12); 48 (1 to 12); 49 (1 to 12); 50 (1 to 12); 51 (1 to 12); 52 (1 to 12); 55; 56 (1 to 12); 57 (2 to 12); 58 (1 to 12); 60 (1 to 12); 61 (1 to 12); 62 (1 to 12); 63 (1 to 12); 64 (5 to 12); 65 (1 to 12); 66 (1, 2, 4 to 12); 67 (1 to 12); 68 (1 to 12); 69 (1 to 12); 70 (1 to 12); 71 (1)
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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 : 70 (1-12); 71 (1-12); 72 (1-12); 73 (1-12); 74 (1-12); 75 (1-11)
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Library of Congress
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Preserved
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2025-04-07
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70 (1 to 12); 71 (1 to 6); 73 (9, 10, 12); 74 (3 to 11); 75 (1 to 8, 11); 76 (1 to 4, 7, 9, 11, 12); 77 (1, 3 to 12); 78 (1 to 12); 79 (1, 8 to 11); 80 (4, 5)
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