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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 15; 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 20 (1 to 6); 21 (1, 3, 5, 6, 9 to 12); 22 (2 to 4, 6, 9 to 12); 23 (1, 4, 5, 8 to 11); 24 (S1, 1 to 3, 5, 6, 10, 12); 25 (1, 3, 5, 8, 11); 26 (1 to 7, 9 to 12); 27 (1 to 6, 9, 10); 28 (1 to 8, 11, 12); 29 (2 to 4, 6); 30 (1 to 3, 5 to 11); 31 (1 to 4, 6 to 8, 12); 32 (1, 2, 4, 6, 7)
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Portico
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Preserved
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2026-04-30
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Preserved : 2010: 17(1-6), 2011: 18(1-6), 2012: 19(1-6), 2013: 20(1-6), 2014: 21(1-12), 2015: 22(1-12), 2016: 23(1-12), 2017: 24(1, S1, 2-12), 2018: 25(1-12), 2019: 26(1-12), 2020: 27(1-12), 2021: 28(1-12), 2022: 29(1, S1, 2-12), 2023: 30(1-12), 2024: 31(1-12), 2025: 32(1-12), 2026: 33(1-2)
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.17:1-6;vol.18:1-6;vol.19:1-6;vol.20:1-6;vol.21:1-12;vol.22:1-12;vol.23:1-12;vol.24:1-12,sup.S1;vol.25:1-12;vol.26:1-12;vol.27:1-12
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.10:1-6;vol.11:1-6;vol.12:1-6;vol.13:1-6;vol.14:1-6;vol.15:1-6;vol.16:1-6;vol.4:1-4;vol.5:1-4;vol.6:1-4;vol.7:1-6;vol.8:1-6;vol.9:1-6
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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 : 1 (1 to 6); 2 (1 to 6); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 6); 8 (1 to 6); 9 (1 to 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 6)
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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 : 1 (1 to 6); 2 (1 to 6); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 6); 8 (1 to 6); 9 (1 to 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 6)
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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 : 17 (1-6); 18 (1-6); 19 (1-6); 20 (1-6)
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