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Internet Archive
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Preserved
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2025-08-08
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.75:19-24;vol.76:1-12;vol.77:1-12;vol.78:1-12;vol.79:1-12;vol.80:1-10;vol.81:1-10;vol.82:1-10;vol.83:1-11;vol.84:1-6,9-12,7-8
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CLOCKSS Archive
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Preserved
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2026-02-09
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75 to 90
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Portico
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Preserved
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2026-02-12
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Preserved : 2011: 75(19), 2012: 76(1-12), 2013: 77(1-12), 2014: 78(1-12), 2015: 79(1-12), 2016: 80(1-10), 2017: 81(1-10), 2018: 82(1-10), 2019: 83(1-11), 2020: 84(1-12), 2021: 85(1-12), 2022: 86(1-12), 2023: 87(1-12), 2024: 88(1-12), 2025: 89(1-12), 2026: 90(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 : 8 (1 to 9); 75 (2, 19, 21 to 24); 76 (1 to 9, 11, 12); 77 (1 to 9, 11, 12); 78 (1 to 9, 11, 12); 79 (1 to 9, 11, 12); 81 (1 to 9); 82 (1 to 9); 83 (1, 2, 5 to 9, 11); 84 (1 to 6, 7-8, 9, 11, 12); 85 (1 to 6, 7-8, 9, 11, 12); 86 (1 to 6, 7-8, 9, 11, 12); 87 (1 to 6, 7-8, 9, 11, 12); 88 (1 to 6, 7-8, 9, 11, 12); 89 (1 to 3, 5, 6, 7-8, 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 9); 75 (2, 19, 21 to 24); 76 (1 to 9, 11, 12); 77 (1 to 9, 11, 12); 78 (1 to 9, 11, 12); 79 (1 to 9, 11, 12); 81 (1 to 9); 82 (1 to 9); 83 (1, 2, 5 to 9, 11); 84 (1 to 6, 7-8, 9, 11, 12); 85 (1 to 6, 7-8, 9, 11, 12); 86 (1 to 6, 7-8, 9, 11, 12); 87 (1 to 6, 7-8, 9, 11, 12); 88 (1 to 6, 7-8, 9, 11, 12); 89 (1 to 3, 5, 6, 7-8, 9)
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