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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.1:1-6;vol.2:1-12;vol.3:1-12;vol.4:1
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Portico
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Preserved
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2026-02-12
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Preserved : 2018: 1(1-6), 2019: 2(1-12), 2020: 3(1-12), 2021: 4(1-12), 2022: 5(1-12), 2023: 6(1-12), 2024: 7(1-12), 2025: 8(1-12), 2026: 9(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 : 3 (1 to 9, 11, 12); 4 (1 to 9, 11, 12); 5 (1 to 9, 11, 12); 6 (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 : 3 (1 to 9, 11, 12); 4 (1 to 9, 11, 12); 5 (1 to 9, 11, 12); 6 (1 to 9, 11, 12)
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 9
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