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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 55 (1/2, 3/4); 56 (, 1 to 3); 57 (, 1, 2/3, 4 to 6); 58 (, 1, 2, 3/4, 5/6, 7 to 10); 59 (, 1, 2/3, 4, 5); 60 (, 1, 2/3, 4); 61 (, 1/2, 3, 4/5); 62 (, 1 to 4); 63 (, 1, 2/3, 4); 64 (, 1 to 4); 65 (, 1 to 4); 66 (, 1 to 4); 67 (, 1 to 4); 68 (, 1 to 3); 69 (, 1 to 4); 70 (, 1 to 4); 71 (, 1 to 3); 72 (, 1 to 3); 73 (, 1 to 3); 74 (, 1 to 3); 75 (, 1 to 3); 76 (, 1 to 4); 77 (, 1 to 4); 78 (, 1 to 6); 79 (, 1 to 4); 80 (, 1 to 4); 81 (, 1 to 4); 82 (, 1 to 4); 83 (, 1 to 4); 84 (, 1 to 4); 85 (, 1 to 4); 86 (, 1 to 4); 87 (, 1-3); 88 (, 1 to 3); 89 (, 1-2, 3); 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024
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Internet Archive
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Preserved
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2025-08-08
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28 to 79
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.62:1-4;vol.63:1-1,4,2-3;vol.64:1-4;vol.65:1-4;vol.66:1-4;vol.67:1-4;vol.68:1-3;vol.69:1-4;vol.70:1-4;vol.71:1-3;vol.72:1-3;vol.73:1-3;vol.74:1-3;vol.75:1-3;vol.76:1-4;vol.77:1-4;vol.78:1-6;vol.79:1-4;vol.80:1-4;vol.81:1-4;vol.82:1-4;vol.83:1-4;vol.84:1-4;vol.85:1-4
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CLOCKSS Archive
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Preserved
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2026-02-09
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55 to 90
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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 55(1-4), 1991: 56(1-3), 1992: 57(1-6), 1993: 58(1-10), 1994: 59(1-3, 2-5), 1995: 60(1-4), 1996: 61(1-5), 1997: 62(1-4), 1998: 63(1-4), 1999: 64(1-4), 2000: 65(1-4), 2001: 66(1-4), 2002: 67(1-4), 2003: 68(1-3), 2004: 69(1-4), 2005: 70(1-4), 2006: 71(1-3), 2007: 72(1-3), 2008: 73(1-3), 2009: 74(1-3), 2010: 75(1-3), 2011: 76(1-4), 2012: 77(1-4), 2013: 78(1-6), 2014: 79(1-4), 2015: 80(1-4), 2016: 81(1-4), 2017: 82(1-4), 2018: 83(1-4), 2019: 84(1-4), 2020: 85(1-4), 2021: 86(1-4), 2022: 87(1-3), 2023: 88(1-3), 2024: 89(1-3), 2025: 90(1-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 2025: 90(1-3)
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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 : 7 (1 to 4); 8 (1 to 4); 9 (1-3); 62 (2 to 4); 63 (1, 2?3, 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 3); 69 (1 to 4); 71 (1 to 3); 72 (1 to 3); 73 (1 to 3); 74 (1 to 3); 75 (1 to 3); 76 (1 to 4); 77 (1 to 4); 78 (1 to 6); 79 (1 to 4); 81 (1 to 4); 82 (1 to 4); 83 (1 to 4); 84 (1 to 4); 85 (1 to 4); 86 (1 to 4); 87 (1-3); 88 (2, 3); 89 (1-2, 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 : 7 (1 to 4); 8 (1 to 4); 9 (1-3); 62 (2 to 4); 63 (1, 2?3, 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 3); 69 (1 to 4); 71 (1 to 3); 72 (1 to 3); 73 (1 to 3); 74 (1 to 3); 75 (1 to 3); 76 (1 to 4); 77 (1 to 4); 78 (1 to 6); 79 (1 to 4); 81 (1 to 4); 82 (1 to 4); 83 (1 to 4); 84 (1 to 4); 85 (1 to 4); 86 (1 to 4); 87 (1-3); 88 (2, 3); 89 (1-2, 3)
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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 : 71 (1-3); 72 (1-3)
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