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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 58 (2 to 4); 59 (1 to 3); 60 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1 to 4); 70 (1 to 4); 71 (1 to 4); 72 (1)
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.51:1-4;vol.52:1-4;vol.53:1-4;vol.54:1-4;vol.55:1-4;vol.56:1-4;vol.57:1-4;vol.58:1-4;vol.59:1-4;vol.60:1-4;vol.61:1-4;vol.62:1-4;vol.63:1-4;vol.64:1-4;vol.65:1-4;vol.66:1-4
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CLOCKSS Archive
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Preserved
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2026-05-25
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51 to 72
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Portico
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Preserved
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2026-05-28
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Preserved : 2012: 58(1-4), 2013: 59(1-4), 2014: 60(1-4), 2015: 61(1-4), 2016: 62(1-4), 2017: 63(1-4), 2018: 64(1-4), 2019: 65(1-4), 2020: 66(1-4), 2021: 67(1-4), 2022: 68(1-4), 2023: 69(1-4), 2024: 70(1-4), 2025: 71(1-4), 2026: 72(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 : 6 (1 to 4); 7 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1 to 4); 71 (1 to 3)
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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 : 6 (1 to 4); 7 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1 to 4); 71 (1 to 4)
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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 : 52 (1-4); 53 (1-4)
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Library of Congress
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Preserved
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2025-04-07
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61 (1 to 4); 62 (1 to 4); 63 (1, 2, 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1, 4); 70 (2)
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