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Portico
|
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Preserved
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2026-02-12
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|
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Preserved : 2023: 47(1-6), 2024: 48(1-6), 2025: 49(1-6)
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Portico
|
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Preserved
|
2026-02-12
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Preserved : 1977/1978: 1(1-2), 1978: 2(1-3), 1979: 3(1-3), 1980: 4(1, S 1, 2-3), 1981: 5(1-3), 1982: 6(1-3), 1983: 7(1-3), 1984: 8(1, S 1, 2-3), 1985: 9(1-3), 1986: 10(1-4), 1987: 11(1, S 1, 2-3), 1988: 12(1-4), 1989: 13(1-4), 1990: 14(1-4)
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|
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Portico
|
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Preserved
|
2026-02-12
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|
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Preserved : 1991: 15(1-4), 1992: 16(1-4), 1993: 17(1-4), 1994: 18(1-4), 1995: 19(1-6)
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CLOCKSS Archive
|
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Preserved
|
2026-02-09
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15 to 46
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Scholars Portal
|
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Preserved
|
2025-09-02
|
|
|
Preserved : 20 (1 to 6); 21 (, 1 to 7); 22 (, 1 to 7); 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 to 6); 40 (, 1 to 6); 41 (, 1 to 6); 42 (, 1 to 6); 43 (, 1 to 6); 44 (, 1 to 6); 45 (, 1 to 6); 46 (, 1 to 6); 47 (, 1 to 6); 48 (, 1 to 6); 49 (, 1 to 4); 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; 2025
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CLOCKSS Archive
|
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Preserved
|
2026-02-09
|
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|
47 to 49
|
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|
Internet Archive
|
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Preserved
|
2025-08-08
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|
|
17 to 20
|
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|
Technische Informationsbibliothek
|
|
Preserved
|
2026-01-13
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|
vol.21:1-7;vol.22:1-7;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;vol.34:1-6,sup.s1;vol.35:1-6;vol.36:1-6;vol.37:1-6;vol.38:1-6;vol.39:1-6;vol.40:1-6,S1;vol.41:1-6;vol.42:1-6;vol.43:1-6;vol.44:1-6
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|
|
Portico
|
|
Preserved
|
2026-02-12
|
|
|
Preserved : 1996: 20(1-6), 1997: 21(1-7), 1998: 22(1-7), 1999: 23(1-6), 2000: 24(1-6), 2001: 25(1-6), 2002: 26(1-6), 2003: 27(1-6), 2004: 28(1-6), 2005: 29(1-6), 2006: 30(1-6), 2007: 31(1-6), 2008: 32(1-6), 2009: 33(1-6), 2010: 34(1-6), 2011: 35(1-6), 2012: 36(1-6), 2013: 37(1-6), 2014: 38(1-6), 2015: 39(1-6), 2016: 40(1, S 1, 2-6), 2017: 41(1-6), 2018: 42(1-6), 2019: 43(1-6), 2020: 44(1-6), 2021: 45(1-6), 2022: 46(1-6)
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|
|
National Digital Preservation Program, China
|
|
Preserved
|
2025-10-23
|
|
|
Preserved : 3 (1 to 6); 4 (S1, 1 to 6); 21 (1 to 7); 22 (1 to 7); 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 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6)
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|
|
National Digital Preservation Program, China
|
|
Preserved
|
2025-12-04
|
|
|
Preserved : 3 (1 to 6); 4 (S1, 1 to 6); 21 (1 to 7); 22 (1 to 7); 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 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6)
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|
|
National Library of the Netherlands
|
|
Preserved
|
2024-12-15
|
|
|
Preserved : 31 (1-5)
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