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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 6); 7 (, 1 to 6); 8 (, 1 to 6); 9 (, 1 to 6); 10 (, 1 to 6); 11 (, 1 to 6); 12 (, 1 to 6); 13 (, 1 to 6); 14 (, 1 to 6); 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 (, 1-2, 3-4); 32 (, 1-2, 3-4); 33 (, 1-2, 3); 34 (, 1-2, 3-4); 35 (, 1-2, 3-4); 36 (, 1-2, 3-4); 37 (, 1-2, 3-4); 38 (, 1-2, 3-4); 39 (, 1-2, 3-4); 40 (, 1-2, 3-4); 41 (, 1-2, 3-4); 42 (, 1-2, 3-4); 43 (, 1-2, 3-4); 44 (, 1-2, 3-4); 45 (, 1-2, 3-4); 46 (, 1-2, 3-4); 47 (, 1-2, 3-4); 48 (, 1-2, 3-4); 49 (, 1-2, 3-4); 50 (, 1-2, 3-4); 51 (, 1-2, 3-4); 52 (, 1-2, 3-4); 53 (, 1-2, 3-4); 54 (, 1-2, 3-4); 55 (, 1-2, 3-4); 56 (, 1-2, 3-4); 1973; 1974; 1975; 1976; 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
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Internet Archive
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Preserved
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2025-08-08
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17 to 52
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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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.31:1-2,3-4;vol.32:1-2,3-4;vol.33:1-2,3-4;vol.34:1-2,3-4;vol.35:1-2,3-4;vol.36:1-2,3-4;vol.37:1-2,3-4;vol.38:1-2,3-4;vol.39:1-2,3-4;vol.40:1-2,3-4;vol.41:1-2,3-4;vol.42:1-2,3-4;vol.43:1-2,3-4;vol.44:1-2,3-4;vol.45:1-2,3-4;vol.46:1-2,3-4;vol.47:1-2,3-4;vol.48:1-2,3-4;vol.49:1-2,3-4;vol.50:1-2,3-4;vol.51:1-2,3-4;vol.52:1-2,3-4;vol.53:1-2,3-4;vol.54:1-2,3-4;vol.55:1-2,3-4;vol.56:1-2,3-4;vol.57:1-2,3-4;vol.58:1-2,3-4;vol.59:1-2,3-4;vol.60:1-2,3-4;vol.61:1-2,3-4;vol.62:1-2,3-4;vol.63:1-2,3-4;vol.64:1-2,3-4;vol.65:1-2,3-4;vol.66:1-2,3-4
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 49, 51 to 76
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Portico
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Preserved
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2026-02-12
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Preserved : 1973: 1(1-4), 1974: 2(1-4), 1975: 3(1-4), 1976: 4(1-4), 1977: 5(1-4), 1978: 6(1-6), 1979: 7(1-6), 1980: 8(1-6), 1981: 9(1-6), 1982: 10(1-6), 1983: 11(1-6), 1984: 12(1-6), 1985: 13(1-6), 1986: 14(1-6), 1987: 15(1-6), 1988: 16(1-6), 1989: 17(1-6), 1990: 18(1-6), 1991: 19(1-6), 1992: 20(1-6), 1993: 21(1-6), 1994: 22(1-6), 1995: 23(1-6), 1996: 24(1-6), 1997: 25(1-6), 1998: 26(1-6), 1999: 27(1-6), 2000: 28(1-6), 2001: 29(1-6), 2002: 30(1-6), 2003: 31(1-4), 2003: 32(1-4), 2004: 33(1-4), 2004: 34(1-4), 2005: 35(1-4), 2005: 36(1-4), 2006: 37(1-4), 2006: 38(1-4), 2007: 39(1-4), 2007: 40(1-4), 2008: 41(1-4), 2008: 42(1-4), 2009: 43(1-4), 2009: 44(1-4), 2010: 45(1-4), 2010: 46(1-4), 2011: 47(1-4), 2011: 48(1-4), 2012: 49(1-4), 2012: 50(1-4), 2013: 51(1-4), 2013: 52(1-4), 2014: 53(1-4), 2014: 54(1-4), 2015: 55(1-4), 2015: 56(1-4), 2016: 57(1-4), 2016: 58(1-4), 2017: 59(1-4), 2017: 60(1-4), 2018: 61(1-4), 2018: 62(1-4), 2019: 63(1-4), 2019: 64(1-4), 2020: 65(1-4), 2020: 66(1-4), 2021: 67(1-4), 2021: 68(1-4), 2022: 69(1-4), 2022: 70(1-4), 2023: 71(1-4), 2023: 72(1-4), 2024: 73(1-4), 2024: 74(1-4), 2025: 75(1-4), 2025: 76(1-4)
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LOCKSS Archive
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Preserved
|
2026-02-09
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1 to 56
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Portico
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Preserved
|
2026-02-12
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Preserved : 1973: 1(1-4), 1974: 2(1-4), 1975: 3(1-4), 1976: 4(1-4), 1977: 5(1-4), 1978: 6(1-6), 1979: 7(1-6), 1980: 8(1-6), 1981: 9(1-6), 1982: 10(1-6), 1983: 11(1-6), 1984: 12(1-6), 1985: 13(1-6), 1986: 14(1-6), 1987: 15(1-6), 1988: 16(1-6), 1989: 17(1-6), 1990: 18(1-6), 1991: 19(1-6), 1992: 20(1-6), 1993: 21(1-6), 1994: 22(1-6), 1995: 23(1-6), 1996: 24(1-6), 1997: 25(1-6), 1998: 26(1-6), 1999: 27(1-6), 2000: 28(1-6), 2001: 29(1-6), 2002: 30(1-6), 2003: 31(1-4), 2003: 32(1-4), 2004: 33(1-4), 2004: 34(1-4), 2005: 35(1-4), 2005: 36(1-4), 2006: 37(1-4), 2006: 38(1-4), 2007: 39(1-4), 2007: 40(1-4), 2008: 41(1-4), 2008: 42(1-4), 2009: 43(1-4), 2009: 44(1-4), 2010: 45(1-4), 2010: 46(1-4), 2011: 47(1-4), 2011: 48(1-4), 2012: 49(1-4), 2012: 50(1-4), 2013: 51(1-4), 2013: 52(1-4), 2014: 53(1-4), 2014: 54(1-4), 2015: 55(3-4), 2015: 56(1-4)
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CLOCKSS Archive
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Preserved
|
2026-02-09
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25 to 56
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National Digital Preservation Program, China
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Preserved
|
2025-10-23
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Preserved : 3 (1 to 6); 4 (1-2, 3-4); 5 (1-2, 3-4); 6 (1-2, 3-4); 7 (1-2, 3-4); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1-2, 3-4); 32 (1-2, 3-4); 33 (1-2, 3-4); 34 (1-2, 3-4); 35 (1-2, 3-4); 36 (1-2, 3-4); 37 (1-2, 3-4); 38 (1-2, 3-4); 39 (1-2, 3-4); 41 (1-2, 3-4); 42 (1-2, 3-4); 43 (1-2, 3-4); 44 (1-2, 3-4); 45 (1-2, 3-4); 46 (1-2, 3-4); 47 (1-2, 3-4); 48 (1-2, 3-4); 49 (1-2, 3-4); 51 (1-2, 3-4); 52 (1-2, 3-4); 53 (1-2, 3-4); 54 (1-2, 3-4); 55 (1-2, 3-4); 56 (1-2, 3-4); 57 (1-2, 3-4); 58 (1-2, 3-4); 59 (1-2, 3-4); 61 (1-2, 3-4); 62 (1-2, 3-4); 63 (1-2, 3-4); 64 (1-2, 3-4); 65 (1-2, 3-4); 66 (1-2, 3-4); 67 (1-2, 3-4); 68 (1-2, 3-4); 69 (1-2, 3-4)
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National Digital Preservation Program, China
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Preserved
|
2025-12-04
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Preserved : 3 (1 to 6); 4 (1-2, 3-4); 5 (1-2, 3-4); 6 (1-2, 3-4); 7 (1-2, 3-4); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1-2, 3-4); 32 (1-2, 3-4); 33 (1-2, 3-4); 34 (1-2, 3-4); 35 (1-2, 3-4); 36 (1-2, 3-4); 37 (1-2, 3-4); 38 (1-2, 3-4); 39 (1-2, 3-4); 41 (1-2, 3-4); 42 (1-2, 3-4); 43 (1-2, 3-4); 44 (1-2, 3-4); 45 (1-2, 3-4); 46 (1-2, 3-4); 47 (1-2, 3-4); 48 (1-2, 3-4); 49 (1-2, 3-4); 51 (1-2, 3-4); 52 (1-2, 3-4); 53 (1-2, 3-4); 54 (1-2, 3-4); 55 (1-2, 3-4); 56 (1-2, 3-4); 57 (1-2, 3-4); 58 (1-2, 3-4); 59 (1-2, 3-4); 61 (1-2, 3-4); 62 (1-2, 3-4); 63 (1-2, 3-4); 64 (1-2, 3-4); 65 (1-2, 3-4); 66 (1-2, 3-4); 67 (1-2, 3-4); 68 (1-2, 3-4); 69 (1-2, 3-4)
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National Digital Preservation Program, China
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Preserved
|
2025-10-23
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Preserved : 3 (1 to 6); 4 (1, 3); 5 (1, 3); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1, 3); 32 (1, 3); 33 (1, 3); 34 (1, 3); 35 (1, 3); 36 (1, 3); 37 (1, 3); 38 (1, 3); 39 (1, 3); 41 (1, 3); 42 (1, 3); 43 (1, 3); 44 (1, 3); 45 (1, 3); 46 (1, 3); 47 (1, 3); 48 (1, 3); 49 (1, 3); 51 (1, 3); 52 (1, 3); 53 (1, 3); 54 (1, 3); 55 (1, 3); 56 (1, 3)
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National Digital Preservation Program, China
|
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Preserved
|
2025-12-04
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Preserved : 3 (1 to 6); 4 (1, 3); 5 (1, 3); 25 (1 to 6); 26 (1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 31 (1, 3); 32 (1, 3); 33 (1, 3); 34 (1, 3); 35 (1, 3); 36 (1, 3); 37 (1, 3); 38 (1, 3); 39 (1, 3); 41 (1, 3); 42 (1, 3); 43 (1, 3); 44 (1, 3); 45 (1, 3); 46 (1, 3); 47 (1, 3); 48 (1, 3); 49 (1, 3); 51 (1, 3); 52 (1, 3); 53 (1, 3); 54 (1, 3); 55 (1, 3); 56 (1, 3)
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National Library of the Netherlands
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Preserved
|
2024-12-15
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Preserved : 25 (1-6); 26 (1-6); 27 (1-6); 28 (1-6); 29 (1-6); 30 (1-6); 31 (1, 3); 32 (1, 3); 33 (1, 3); 34 (1, 3-4); 35 (1-2, 3-4); 36 (1-2, 3-4); 37 (1-2, 3-4); 38; 39; 40 (1-2, 3-4); 41 (1-2, 3-4); 42 (1-2, 3-4); 43 (1-2, 3-4); 44 (1-2, 3-4); 45 (1-2, 3-4); 46 (1-2, 3-4); 47 (1-2, 3-4); 48 (1-2, 3-4); 49 (1-2, 3-4); 50 (1-2, 3-4); 51 (1-2, 3-4); 52 (1-2, 3-4); 53 (1-2, 3-4); 54 (1-2, 3-4); 55 (1-2, 3-4); 56 (1-2, 3-4)
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