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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 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (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 4); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 6); 20 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 30 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1)
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Internet Archive
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Preserved
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2025-08-08
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1 to 24
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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;vol.15:1-6;vol.16:1-6;vol.17:1-6;vol.18:1-6;vol.19:1-6;vol.20:1-6;vol.21:1-6;vol.22:1-6;vol.23:1-6;vol.24:1-6;vol.25:1-6;vol.26:1-6;vol.27:1-6;vol.28:1-6;vol.29:1-6;vol.30:1-6;vol.31:1-6;vol.32:1-6;vol.33:1-6
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Portico
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Preserved
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2026-04-09
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Preserved : 1988: 1(1-4), 1989: 2(1-4), 1990: 3(1-4), 1991: 4(1-4), 1992: 5(1-4), 1993: 6(1-4), 1994: 7(1-4), 1995: 8(1-4), 1996: 9(1-4), 1997: 10(1-4), 1998: 11(1-4), 1999: 12(1-4), 2000: 13(1-4), 2001: 14(1-4), 2002: 15(1-6), 2003: 16(1-6), 2004: 17(1-6), 2005: 18(1-6), 2006: 19(1-6), 2007: 20(1-6), 2008: 21(1-6), 2009: 22(1-6), 2010: 23(1-6), 2011: 24(1-6), 2012: 25(1-6), 2013: 26(1-6), 2014: 27(1-6), 2015: 28(1-6), 2016: 29(1-6), 2017: 30(1-6), 2018: 31(1-6), 2019: 32(1-6), 2020: 33(1-6), 2021: 34(1-6), 2022: 35(1-6), 2023: 36(1-6), 2024: 37(1-6), 2025: 38(1-6), 2026: 39(1)
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CLOCKSS Archive
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Preserved
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2026-04-06
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4 to 39
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LOCKSS Archive
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In Progress
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2026-04-06
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Portico
|
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Preserved
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2026-04-09
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Preserved : 1989: 2(4)
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Portico
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Preserved
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2026-04-09
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Preserved : 1991: 4(4), 1992: 5(1)
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Portico
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Preserved
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2026-04-09
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Preserved : 1996: 9(4)
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Portico
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Preserved
|
2026-04-09
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Preserved : 2004: 17(5)
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National Digital Preservation Program, China
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Preserved
|
2025-10-23
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Preserved : 1 (1 to 4); 2 (1 to 6); 3 (1 to 6); 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 6); 18 (1 to 6); 19 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 4)
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National Digital Preservation Program, China
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Preserved
|
2025-12-04
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Preserved : 1 (1 to 4); 2 (1 to 6); 3 (1 to 6); 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 6); 18 (1 to 6); 19 (1 to 6); 21 (1 to 6); 22 (1 to 6); 23 (1 to 6); 24 (1 to 6); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 5)
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National Library of the Netherlands
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Preserved
|
2024-12-15
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Preserved : 10 (1-4); 11 (1-4); 12 (1-4); 14 (1-4); 15 (1-6); 16 (1-6); 17 (1-4)
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