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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 (, 1); 3 (, 1); 4 (, 1); 5 (, 1); 6 (, 1); 7 (, 1); 8 (, 1); 9 (, 1); 10 (, 1-4, 5); 11 (, 1); 12 (, 1); 13 (, 1-2, 3 to 6); 14 (, 1-2, 3-4, 5, 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 (, 1-2, 3, 4-5, 6); 27 (, 1 to 6); 28 (, 1 to 6); 29 (, 1 to 6); 30 (, 1 to 6); 31 (, 1 to 4, 5-6); 32 (, 1 to 6); 33 (, 1 to 4, 5-6); 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, 2-3, 4 to 6); 42 (, 1 to 6); 43 (, 1-2, 3 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 6, 7/8, 9, 10, 11/12); 50 (, 1, 3, 5/6); 51 (, 1 to 3, 4/5, 6, 7, 8/9, 10 to 12); 52 (, 1, 3-4); 53 (, 1 to 10, 12); 54 (, 1 to 12); 55 (, 1 to 12); 56 (, 1 to 12); 57 (, 1-2, 3-4, 5 to 12); 58 (, 1, 2-3, 4, 5, 7 to 12); 59 (, 1 to 12); 60 (, 1, 2, 3-4, 5 to 12); 61 (, 1 to 10, 11-12); 62 (, 1 to 10, 11-12); 63 (, 1 to 12); 64 (, 1 to 12); 65 (, 1 to 12); 66 (, 1 to 7, 9, 11, 12); 67 (, 1 to 4, 5-6, 7 to 10, 11-12); 68 (, 1 to 6, 8 to 10); 69 (, 1 to 7, 8-9, 10); 70 (, 1 to 10); 71 (, 1, 4, 5-6, 7, 8, 10); 72 (, 1-2, 3 to 5, 6-7, 8, 9-10); 73 (, 1 to 6); 74 (, 1 to 6); 75 (, 1 to 6); 76 (, 1, 3, 4, 5-6); 77 (, 1); 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; 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 57
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Portico
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Preserved
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2026-02-12
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Preserved : 1974: 1(1), 1975: 2(1), 1976: 3(1), 1977: 4(1), 1977: 5(1), 1978: 6(1), 1978: 7(1), 1979: 8(1), 1979: 9(1), 1980: 10(1-5), 1980: 11(1), 1981: 12(1), 1981: 13(1-6), 1981: 14(1-6), 1982: 15(1-6), 1982: 16(1-6), 1983: 17(1-6), 1983: 18(1-6), 1984: 19(1-6), 1984: 20(1-6), 1985: 21(1-6), 1985: 22(1-6), 1986: 23(1-6), 1986: 24(1-6), 1987: 25(1-6), 1987: 26(1-6), 1988: 27(1-6), 1988: 28(1-6), 1989: 29(1-6), 1989: 30(1-6), 1990: 31(1-6), 1990: 32(1-6), 1991: 33(1-6), 1991: 34(1-6), 1992: 35(1-6), 1992: 36(1-6), 1992/1993: 37(1-6), 1993: 38(1-6), 1994: 39(1-6), 1994: 40(1-6), 1995: 41(1-6), 1995: 42(1-6), 1995/1996: 43(1-6), 1996: 44(1-6), 1996/1997: 45(1-6), 1997: 46(1-6), 1997/1998: 47(1-6), 1998: 48(1-6), 1999: 49(1-12), 1999: 50(1-6), 2000: 51(1-12), 2000/2001: 52(1-4), 2001/2002: 53(1-12), 2002/2003: 54(1-12), 2003/2004: 55(1-12), 2004/2005: 56(1-12), 2005/2006: 57(1-12), 2006: 58(1-12), 2007: 59(1-12), 2008: 60(1-12), 2009: 61(1-12), 2010: 62(1-12), 2011: 63(1-12), 2012: 64(1-11), 2013: 65(1-10, 12), 2014: 66(1-12), 2015: 67(4-12), 2016: 68(1-10), 2017: 69(1-10), 2018: 70(1-10), 2019: 71(1-10), 2020: 72(1-10), 2021: 73(1-6), 2022: 74(1-6), 2023: 75(2-6), 2024: 76(1-6), 2025: 77(1), 2026: 78(1)
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 44, 46 to 63
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 78
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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 : 43 (5, 6); 44 (1-3, 5, 6); 45 (1-6); 46 (1-6); 47 (1-6); 48 (1-6); 49 (1-6, 7-8, 9, 10, 11-12); 50 (1-2, 3-4, 5-6); 51 (1-3, 4-5, 6, 7, 8-9, 10-12); 52 (1-2, 3-4); 53 (1-9, 10-11, 12); 54 (1-12); 55 (1-12); 56 (1-12); 57 (1-2, 3-4, 5-12); 58 (1, 2-3, 4, 5-6, 7-12); 59 (1-5, 7-12); 60 (1, 2, 3-4, 5-12); 61 (1-10, 11-12); 62 (1-10, 11-12); 63 (1-12); 64 (1-12); 65 (1-9, 11, 12); 66 (1-6, 7-8, 9-10, 11, 12); 67 (1-4, 5-6, 7-10, 11-12); 68 (1-5, 6-7, 8-10); 69 (1-7, 8-9, 10); 70 (1-10); 71 (1-4, 5-6, 7, 8-9)
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Library of Congress
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Preserved
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2025-04-07
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70 (3 to 10); 71 (1 to 5-6, 7, 8-9, 10); 72 (1-2, 3 to 6-7, 8, 9-10); 73 (1 to 6); 74 (1 to 6); 75 (1 to 6); 76 (1 to 5-6)
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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 : 5 (1, 3, 5); 6 (1 to 3, 5 to 9, 11, 12); 7 (1 to 9); 45 (3 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 7, 9, 11); 51 (1 to 4, 6 to 8, 11, 12); 52 (1, 3); 53 (1 to 9, 12); 54 (1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1, 3, 5 to 9, 11, 12); 58 (1, 2, 4, 5, 7 to 9, 11, 12); 59 (1 to 9, 11, 12); 61 (1 to 9, 11); 62 (1 to 9, 11); 63 (1 to 9, 11, 12); 64 (1 to 9, 11, 12); 65 (1 to 9, 11, 12); 66 (1 to 7, 11, 12); 67 (1 to 5, 7 to 9, 11); 68 (1 to 6, 8, 9); 69 (1 to 8); 71 (1 to 4, 5-6, 7, 8-9); 72 (1-2, 3 to 5, 6-7, 8, 9-1); 73 (1 to 6); 74 (1 to 6); 75 (1 to 6); 76 (1 to 5)
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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 : 5 (1, 3, 5); 6 (1 to 3, 5 to 9, 11, 12); 7 (1 to 9); 45 (3 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 7, 9, 11); 51 (1 to 4, 6 to 8, 11, 12); 52 (1, 3); 53 (1 to 9, 12); 54 (1 to 9, 11, 12); 55 (1 to 9, 11, 12); 56 (1 to 9, 11, 12); 57 (1, 3, 5 to 9, 11, 12); 58 (1, 2, 4, 5, 7 to 9, 11, 12); 59 (1 to 9, 11, 12); 61 (1 to 9, 11); 62 (1 to 9, 11); 63 (1 to 9, 11, 12); 64 (1 to 9, 11, 12); 65 (1 to 9, 11, 12); 66 (1 to 7, 11, 12); 67 (1 to 5, 7 to 9, 11); 68 (1 to 6, 8, 9); 69 (1 to 8); 71 (1 to 4, 5-6, 7, 8-9); 72 (1-2, 3 to 5, 6-7, 8, 9-1); 73 (1 to 6); 74 (1 to 6); 75 (1 to 6); 76 (1 to 5)
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