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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 5); 29 (2 to 6); 30 (1 to 6); 31 (1 to 6); 32 (1 to 5); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 40 (1 to 6); 41 (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.25:1-6;vol.26:1-6;vol.27:1-6;vol.28:1-6;vol.29:1-6;vol.30:1-6;vol.31:1-6;vol.32:1-6;vol.33:1-6;vol.34:1-6;vol.35:1-6
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CLOCKSS Archive
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Preserved
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2026-04-13
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25 to 41
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Portico
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Preserved
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2026-04-16
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Preserved : 2012: 27(1-6), 2013: 28(1-6), 2014: 29(1-6), 2015: 30(1-6), 2016: 31(1-6), 2017: 32(1-6), 2018: 33(1-6), 2019: 34(1-6), 2020: 35(1-6), 2021: 36(1-6), 2022: 37(1-6), 2023: 38(1-6), 2024: 39(1-6), 2025: 40(1-6), 2026: 41(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 : 3 (1 to 6); 4 (1 to 5); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1, 3 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1, 2, 4 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 : 3 (1 to 6); 4 (1 to 5); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1, 3 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1, 2, 4 to 6)
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