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