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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1, 2); 2 (, 1 to 4); 3 (, 1 to 4); 4 (, 1 to 4); 5 (, 1 to 6); 6 (, 1 to 6); 7 (, 1 to 9); 8 (, 1 to 12); 9 (, 1 to 12); 10 (, 1 to 13); 11 (, 1 to 16); 12 (, 2, 16); 14 (, 8); 15 (, 1 to 9 to 11 to 16); 16 (, 1 to 16); 17 (, 1 to 4); 18 (, 1 to 16); 19 (, 2 to 9, 11 to 16); 20 (, 1 to 16); 21 (, 1 to 16); 22 (, 1 to 16); 23 (, 1 to 13, 14-15, 16); 24 (, 1 to 12); 25 (, 1 to 12); 26 (, 1 to 12); 27 (, 1 to 12); 28 (, 1 to 12); 29 (, 1, 3-4, 5 to 12); 30 (, 1 to 12); 31 (, 1 to 12); 32 (, 1 to 12); 33 (, 1 to 12); 34 (, 1 to 12); 35 (, 2 to 12); 36 (, 1 to 12); 37 (, 1 to 4, 5-6, 7-8, 9-10, 11, 12); 38 (, 1 to 12); 39 (, 1-2, 3 to 5, 6-7, 8 to 10, 11-12); 40 (, 1, 2, 3-4, 5-6, 7 to 12); 41 (, 1-2, 4 to 10, 11-12); 42 (, 1-3, 4, 5-7); 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 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; 2025
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Internet Archive
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Preserved
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2025-08-08
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1 to 15
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Portico
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Preserved
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2026-02-12
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Preserved : 2000: 1(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1985: 1(1-2), 1986: 2(1-4, S 1986A), 1987: 3(1-4), 1988: 4(1-4, S 1988A), 1989: 5(1-6, S 1989A), 1990: 6(1-6), 1991: 7(1-9), 1992: 8(1-12, S 1992A, S 1992B), 1993: 9(1-12, S 1993A), 1994: 10(1-13, S 1994A), 1995: 11(1-16, S 1995A, S 1995B), 1996: 12(1-16), 1997: 13(1-16), 1998: 14(1-16), 1999: 15(1-16), 2000: 16(1-16), 2000: 17(1-4), 2001: 18(1-16), 2002: 19(1-16), 2003: 20(1-16), 2004: 21(1-16), 2005: 22(1, S 1, 2-16), 2006: 23(1-16), 2007: 24(1, S 1, 2-12), 2008: 25(1-12), 2009: 26(1, S 1, 2-12), 2010: 27(1-12), 2011: 28(1-12), 2012: 29(1-12), 2013: 30(1, S 1, 2-12), 2014: 31(1-12), 2015: 32(1, S 1, 2-12), 2016: 33(1-12), 2017: 34(1-12), 2018: 35(1-12), 2019: 36(1-12), 2020: 37(1-12), 2021: 38(1-12), 2022: 39(1-12), 2023: 40(1-12), 2024: 41(1-12), 2025: 42(1-12)
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CLOCKSS Archive
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Preserved
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2026-02-09
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7 to 42
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.13:1-16;vol.14:1-16;vol.15:1-9,11-16,10A,10B;vol.16:1-16;vol.17:1-4;vol.18:1-16;vol.19:1-16;vol.20:1-16;vol.21:1-16;vol.22:1-16,S1;vol.23:1-13,16,14-15;vol.24:1-12,S1;vol.25:1-12;vol.26:1-12,S1;vol.27:1-12;vol.28:1-12,S1;vol.29:1-2,5-12,3-4;vol.30:1-12,S1;vol.31:1-12;vol.32:1-12,S1;vol.33:1-12;vol.34:1-12;vol.35:1-12;vol.36:1-12;vol.37:1-4,11-12,5-6,7-8,9-10
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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 : 2 (1 to 9, 11 to 16); 3 (S1, 1 to 9, 11, 12); 4 (1, 2, 3-4, 5-6, 7 to 9, 11, 12); 12 (1 to 9, 11 to 16); 13 (1 to 9, 11 to 16); 14 (1 to 9, 11 to 16); 15 (1 to 9, 11 to 16); 16 (1 to 9, 11 to 16); 17 (1 to 4); 18 (1 to 9, 11 to 16); 19 (1 to 9, 11 to 16); 21 (1 to 9, 11 to 16); 22 (S1, 1 to 9, 11 to 16); 23 (1 to 9, 11 to 13, 14?15, 16); 24 (S1, 1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (S1, 1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (S1, 1 to 9, 11, 12); 29 (1, 2, 3-4, 5 to 9, 11, 12); 31 (1 to 9, 11, 12); 32 (S1, 1 to 9, 11, 12); 33 (1 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1, 2, 4 to 9, 11, 12); 37 (1 to 4, 5-6, 7-8, 9-1, 11, 12); 38 (1 to 9, 11, 12); 39 (1-2, 3 to 5, 6-7, 8, 9, 11-12); 41 (3 to 9, 11-12); 42 (1-3, 4, 5-7)
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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 : 2 (1 to 9, 11 to 16); 3 (S1, 1 to 9, 11, 12); 4 (1, 2, 3-4, 5-6, 7 to 9, 11, 12); 12 (1 to 9, 11 to 16); 13 (1 to 9, 11 to 16); 14 (1 to 9, 11 to 16); 15 (1 to 9, 11 to 16); 16 (1 to 9, 11 to 16); 17 (1 to 4); 18 (1 to 9, 11 to 16); 19 (1 to 9, 11 to 16); 21 (1 to 9, 11 to 16); 22 (S1, 1 to 9, 11 to 16); 23 (1 to 9, 11 to 13, 14?15, 16); 24 (S1, 1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (S1, 1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (S1, 1 to 9, 11, 12); 29 (1, 2, 3-4, 5 to 9, 11, 12); 31 (1 to 9, 11, 12); 32 (S1, 1 to 9, 11, 12); 33 (1 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1, 2, 4 to 9, 11, 12); 37 (1 to 4, 5-6, 7-8, 9-1, 11, 12); 38 (1 to 9, 11, 12); 39 (1-2, 3 to 5, 6-7, 8, 9, 11-12); 41 (3 to 9, 11-12); 42 (1-3, 4, 5-7, 8-1)
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