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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (1, 2); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 3); 15 (1, 3 to 6); 16 (1 to 6); 17 (1 to 8); 18 (1 to 8); 19 (1 to 8); 20 (s1, 1 to 8); 21 (1 to 8); 22 (1 to 8); 23 (1 to 8); 24 (1 to 8); 25 (S1, 1 to 8); 26 (1 to 8); 27 (1 to 9); 28 (1 to 9); 29 (S1, 1 to 9); 30 (S1, 1 to 9); 31 (S1, 1 to 9); 32 (S1, 1 to 9); 33 (S1, 1 to 9); 34 (S1, 1 to 9); 35 (1 to 3)
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.10:1-4;vol.11:1-4;vol.12:1-4;vol.13:1-4;vol.14:1-4,sup.s4;vol.15:1-6;vol.16:1-6;vol.17:1-8;vol.18:1-8;vol.19:1-8;vol.20:1-8,sup.s1,sup.s2;vol.21:1-8;vol.22:1-8;vol.23:1-8;vol.24:1-8;vol.25:1-8,S1,S2;vol.26:1-8;vol.27:1-9;vol.28:1-9;vol.29:1-9,S1;vol.6:1-4;vol.7:1-4;vol.8:1-4;vol.9:1-4
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 35
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Portico
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Preserved
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2026-04-02
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Preserved : 1992: 1(1-2), 1993: 2(1-4), 1994: 3(1-4), 1995: 4(1-4), 1996: 5(1-4), 1997: 6(1-4), 1998: 7(1-4), 1999: 8(1-4), 2000: 9(1-4), 2001: 10(1-4), 2002: 11(1-4), 2003: 12(1-4), 2004: 13(1-4), 2005: 14(1-4), 2006: 15(1-4), 2007: 16(1-4), 2008: 17(1-4), 2009: 18(1-8), 2010: 19(1-8), 2011: 20(1-8), 2012: 21(1-8), 2013: 22(1-8), 2014: 23(1-8), 2015: 24(1-8), 2016: 25(1, S 1, 2, S 2, 3-8), 2017: 26(1-8), 2018: 27(1-9), 2019: 28(1-9), 2020: 29(1, S 1, 2-9), 2021: 30(1, S 1, 2, S 2, 3, S 3, 4-9), 2022: 31(1, S 1, 2-9), 2023: 32(1, S 1, 2, S 2, 3-9), 2024: 33(1, S 1, 2-9), 2025: 34(1, S 1, 2-9), 2026: 35(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 : 1 (1 to 4); 2 (, 1 to 8); 3 (S1, 1 to 9); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (, 1 to 4); 15 (1 to 6); 16 (1 to 6); 17 (1 to 8); 18 (1 to 8); 19 (1 to 8); 21 (1 to 8); 22 (1 to 8); 23 (1 to 7); 24 (1 to 8); 25 (S1, 1 to 8); 26 (1 to 8); 27 (1 to 9); 28 (1 to 9); 29 (S1, 1 to 9); 31 (S1, 1 to 9); 32 (S1, 1 to 9); 33 (S1, 1 to 6, 8, 9); 34 (S1, 1 to 7)
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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 4); 2 (, 1 to 8); 3 (S1, 1 to 9); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (, 1 to 4); 15 (1 to 6); 16 (1 to 6); 17 (1 to 8); 18 (1 to 8); 19 (1 to 8); 21 (1 to 8); 22 (1 to 8); 23 (1 to 7); 24 (1 to 8); 25 (S1, 1 to 8); 26 (1 to 8); 27 (1 to 9); 28 (1 to 9); 29 (S1, 1 to 9); 31 (S1, 1 to 9); 32 (S1, 1 to 9); 33 (S1, 1 to 6, 8, 9); 34 (S1, 1 to 8)
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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 : 15 (1-6); 16 (1-6)
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