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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 7); 40 (1 to 7); 41 (1 to 7); 42 (1 to 8); 43 (1 to 8); 44 (1 to 8); 45 (1 to 8); 46 (1 to 8); 47 (1 to 8); 49 (1 to 8); 50 (1 to 8); 51 (1 to 8); 52 (1 to 8); 53 (1 to 8); 54 (1 to 8); 55 (1 to 8); 56 (1 to 8); 57 (1 to 8); 58 (1 to 8); 59 (1, 5 to 8); 60 (1 to 8); 61 (1 to 8); 62 (1 to 8); 63 (1 to 8); 64 (1 to 8); 65 (1 to 5, 6-7, 8); 66 (1 to 8); 67 (1 to 8); 68 (1 to 8); 69 (1 to 8); 70 (1 to 8); 71 (1 to 8); 72 (1 to 8); 73 (1 to 3)
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Internet Archive
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Preserved
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2025-08-08
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1 to 59
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Portico
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Preserved
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2026-04-23
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Preserved : 1987: 34(1-6), 1988: 35(1-6), 1989: 36(1-6), 1990: 37(1-6), 1991: 38(1-6), 1992: 39(1-7), 1993: 40(1-7), 1994: 41(1-7), 1995: 42(1-8), 1996: 43(1-8), 1997: 44(1-8), 1998: 45(1-8), 1999: 46(1-8), 2000: 47(1-8), 2001: 48(1-8), 2002: 49(1-8), 2003: 50(1-8), 2004: 51(1-8), 2005: 52(1-8), 2006: 53(1-8), 2007: 54(1-8), 2008: 55(1-8), 2009: 56(1-8), 2010: 57(1-8), 2011: 58(1-8), 2012: 59(1-8), 2013: 60(1-8), 2014: 61(1-8), 2015: 62(1-8), 2016: 63(1-8), 2017: 64(1-8), 2018: 65(1-8), 2019: 66(1-8), 2020: 67(1-8), 2021: 68(1-8), 2022: 69(1-8), 2023: 70(1-8), 2024: 71(1-8), 2025: 72(1-8), 2026: 73(1-3)
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CLOCKSS Archive
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Preserved
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2026-04-27
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37 to 73
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.44:1-8;vol.45:1-8;vol.46:1-8;vol.47:1-8;vol.48:1-8;vol.49:1-8;vol.50:1-8;vol.51:1-8;vol.52:1-8;vol.53:1-8;vol.54:1-8;vol.55:1-8;vol.56:1-8;vol.57:1-8;vol.58:1-8;vol.59:1-2,5-8,3-4;vol.60:1-8;vol.61:1-8;vol.62:1-8;vol.63:1-8;vol.64:1-8;vol.65:1-5,8,6-7;vol.66:1-8;vol.67:1-8;vol.68:1
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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 : 5 (1 to 8); 6 (1 to 8); 7 (1 to 8); 43 (1 to 8); 44 (1 to 8); 45 (1 to 8); 46 (1 to 8); 47 (1 to 8); 48 (1 to 8); 49 (1 to 8); 51 (1 to 8); 52 (1 to 8); 53 (1 to 8); 54 (1 to 8); 55 (1 to 8); 56 (1 to 8); 57 (1 to 8); 58 (1 to 8); 59 (1, 2, 3?4, 5 to 8); 61 (1 to 8); 62 (1 to 8); 63 (1 to 8); 64 (1 to 8); 65 (1 to 5, 6-7, 8); 66 (1 to 8); 67 (1 to 8); 68 (1 to 8); 69 (1 to 8); 71 (2 to 8); 72 (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 : 5 (1 to 8); 6 (1 to 8); 7 (1 to 8); 43 (1 to 8); 44 (1 to 8); 45 (1 to 8); 46 (1 to 8); 47 (1 to 8); 48 (1 to 8); 49 (1 to 8); 51 (1 to 8); 52 (1 to 8); 53 (1 to 8); 54 (1 to 8); 55 (1 to 8); 56 (1 to 8); 57 (1 to 8); 58 (1 to 8); 59 (1, 2, 3?4, 5 to 8); 61 (1 to 8); 62 (1 to 8); 63 (1 to 8); 64 (1 to 8); 65 (1 to 5, 6-7, 8); 66 (1 to 8); 67 (1 to 8); 68 (1 to 8); 69 (1 to 8); 71 (2 to 8); 72 (1 to 7)
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