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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 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 to 4); 73 (1 to 4); 74 (1 to 4); 75 (1 to 4); 76 (1 to 4); 77 (1 to 4); 78 (1 to 4); 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 (S1, 1 to 4); 88 (1 to 4); 89 (S1, 1 to 4); 90 (1 to 4)
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Internet Archive
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Preserved
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2025-08-08
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1 to 77
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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.63:1-4;vol.64:1-4;vol.65:1-4;vol.66:1-4;vol.67:1-4;vol.68:1-4;vol.69:1-4;vol.70:1-4;vol.71:1-4;vol.72:1-4;vol.73:1-4;vol.74:1-4;vol.75:1-4;vol.76:1-4;vol.77:1-4;vol.78:1-4;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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2026-04-13
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56 to 91
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Portico
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Preserved
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2026-04-16
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Preserved : 1990: 55(1-4), 1991: 56(1-4), 1992: 57(1-4), 1993: 58(1-4), 1994: 59(1-4), 1995: 60(1-4), 1996: 61(1-4), 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(1-4), 2004: 69(1-4), 2005: 70(1-4), 2006: 71(1-4), 2007: 72(1-4), 2008: 73(1-4), 2009: 74(1-4), 2010: 75(1-4), 2011: 76(1-4), 2012: 77(1-4), 2013: 78(1-4), 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, S1, 2-4), 2023: 88(1-4), 2024: 89(1, S1, 2-4), 2025: 90(1-4), 2026: 91(1)
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