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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 22 (1 to 4, 6 to 8, 9-10); 23 (1, 2-3, 4 to 10); 24 (1 to 10); 25 (1 to 4, 5-6, 7, 8-9, 10 to 12); 26 (1 to 10, 11-12); 27 (1 to 10, 11-12); 28 (1 to 5, 6-7, 8 to 10, 11-12)
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CLOCKSS Archive
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Preserved
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2026-05-11
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22 to 28
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Portico
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Preserved
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2026-05-14
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Preserved : 2003: 22(1-10), 2004: 23(1-10), 2005: 24(1-10), 2006: 25(1-12), 2007: 26(1-12), 2008: 27(1-12), 2009: 28(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.22:1-8,9-10;vol.23:1-1,4-10,2-3;vol.24:1-10;vol.25:1-4,7-7,10-12,5-6,8-9;vol.26:1-10,11-12;vol.27:1-10,11-12;vol.28:1-5,8-10,11-12,6-7
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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 : 22 (1 to 8, 9?1); 23 (1, 2?3, 4 to 9); 24 (1 to 9); 25 (1 to 4, 5?6, 7, 8?9, 11, 12); 26 (1 to 9, 11?12); 27 (1 to 9, 11?12); 28 (1 to 5, 6?7, 8, 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 : 22 (1 to 8, 9?1); 23 (1, 2?3, 4 to 9); 24 (1 to 9); 25 (1 to 4, 5?6, 7, 8?9, 11, 12); 26 (1 to 9, 11?12); 27 (1 to 9, 11?12); 28 (1 to 5, 6?7, 8, 9, 11?12)
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