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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 6); 15; 16 (1 to 6); 17 (, 1 to 6); 18 (, 1-2, 3 to 12); 19 (, 1 to 10, 11-12); 20 (, 1 to 12); 21 (, 1 to 10, 11-12); 22 (, 1 to 12); 23 (, 1 to 9, 10-12); 24 (, 1 to 12); 25 (, 1 to 12); 26 (, 1‐12); 27 (, 1 to 12); 28 (, 1 to 12); 29 (, 1 to 12); 30 (, 1); 31 (, 1 to 12); 32; 33 (1 to 12); 34 (, 1 to 12); 35; 36 (1 to 12); 37 (, 1); 38 (, 1 to 12); 39 (, 1 to 12); 40 (, 1 to 12); 41 (, 1 to 12); 42 (, 1 to 13); 43 (, 1 to 14); 44 (, 1 to 14); 45 (, 1 to 14); 46 (, 1 to 14); 47 (, 1 to 14); 48 (, 1 to 14); 49 (, 1 to 14); 50 (, 1 to 4, 5-6, 7, 8, 9-10, 11-12, 13, 14); 51 (, 1 to 14); 52 (, 1 to 14); 53 (, 1 to 4, 5-6, 7 to 10, 11‐12, 13, 14); 54 (, 1 to 14); 55 (, 5 to 14); 56 (, 1, 2, 3-4, 5 to 8, 9-10, 11 to 14); 57 (, 1 to 14); 58 (, 1 to 10, 11-12, 13-14); 59 (, 1 to 14); 60 (, 1 to 8, 10 to 14); 61 (, 1 to 14); 62 (, 1 to 14); 63 (, 1 to 14); 64 (, 1 to 14); 65 (, 1 to 9, 10-11, 12 to 14); 66 (, 1 to 3, 4-6, 7-8, 9 to 14); 67 (, 1 to 11, 12-13, 14); 68 (, 1-2, 3, 4, 5-6, 7-8); 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 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; 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 47
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CLOCKSS Archive
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Preserved
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2026-02-09
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1, 9, 12 to 69
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Portico
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Preserved
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2026-02-12
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Preserved : 1973: 9(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1976: 12(1-4), 1977: 13(1-4), 1978: 14(1-6), 1978: 15(S 1), 1979: 16(1-6), 1980: 17(1-6), 1981: 18(1-12), 1982: 19(1-12), 1983: 20(1-12), 1984: 21(1-12), 1985: 22(1-12), 1986: 23(1-12), 1987: 24(1-12), 1988: 25(1-12), 1989: 27(1-12), 1990: 28(1-12), 1991: 29(1-12), 1991: 30(1), 1992: 31(1-12), 1993: 32(S 1), 1993: 33(1-12), 1994: 34(1-12), 1994: 35(S 1), 1995: 36(1-12), 1995: 37(1-9), 1996: 38(1-12), 1997: 39(1-12), 1997: 40(1-12), 1998: 41(1-12), 1999: 42(1-13), 2000: 43(1-14), 2001: 44(1, S 1, 2-14), 2002: 45(1-14), 2003: 46(1, S 1, 2-14), 2004: 47(1-14), 2005: 48(1, S 1, 2-14), 2006: 49(1-14), 2007: 50(1, S 1, 2-14), 2008: 51(1-14), 2009: 52(1, S 1, 2-14), 2010: 53(1-10, 13-14), 2011: 54(1-14), 2012: 55(1-14), 2013: 56(1, S1, 2-14), 2014: 57(1-14), 2015: 58(1, S 1, 2-14), 2016: 59(1-14), 2017: 60(1, S1, 2-14), 2018: 61(1-14), 2019: 62(1, S1, 2-14), 2020: 63(1-14), 2021: 64(1-14), 2022: 65(1-14), 2023: 66(1-14), 2024: 67(1-14), 2025: 68(1-14), 2026: 69(1-2)
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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 9, 11, 12); 5 (S1, 1 to 4, 5?6, 7, 8, 9?1, 11?12, 13, 14); 6 (, 1 to 9, 11 to 14); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11 to 13); 43 (1 to 9, 11 to 14); 44 (S1, 1 to 9, 11 to 14); 45 (1 to 9, 11 to 14); 46 (S1, 1 to 9, 11 to 14); 47 (1 to 9, 11 to 14); 48 (S1, 1 to 9, 11 to 14); 49 (1 to 9, 11 to 14); 51 (1 to 9, 11 to 14); 52 (S1, 1 to 9, 11 to 14); 53 (1 to 4, 5?6, 7 to 9, 11?12, 13, 14); 54 (S1, 1 to 9, 11 to 14); 55 (1 to 9, 11 to 14); 56 (, 1, 2, 3-4, 5 to 8, 9-1, 11 to 14); 57 (1 to 9, 11 to 13); 58 (S1, 1 to 9, 13-14); 59 (1 to 9, 11 to 14); 61 (1 to 9, 11 to 14); 62 (S1, 1, 2, 5 to 9, 11 to 14); 63 (1 to 9, 11 to 14); 64 (1 to 8, 11 to 14); 65 (1 to 9, 12 to 14); 66 (1 to 3, 4-6, 7-8, 9, 11, 13, 14); 67 (1 to 5, 7 to 9, 11, 12-13, 14); 68 (1-2, 3, 4, 5-6, 7-8, 9-1)
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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 9, 11, 12); 5 (S1, 1 to 4, 5?6, 7, 8, 9?1, 11?12, 13, 14); 6 (, 1 to 9, 11 to 14); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11 to 13); 43 (1 to 9, 11 to 14); 44 (S1, 1 to 9, 11 to 14); 45 (1 to 9, 11 to 14); 46 (S1, 1 to 9, 11 to 14); 47 (1 to 9, 11 to 14); 48 (S1, 1 to 9, 11 to 14); 49 (1 to 9, 11 to 14); 51 (1 to 9, 11 to 14); 52 (S1, 1 to 9, 11 to 14); 53 (1 to 4, 5?6, 7 to 9, 11?12, 13, 14); 54 (S1, 1 to 9, 11 to 14); 55 (1 to 9, 11 to 14); 56 (, 1, 2, 3-4, 5 to 8, 9-1, 11 to 14); 57 (1 to 9, 11 to 13); 58 (S1, 1 to 9, 13-14); 59 (1 to 9, 11 to 14); 61 (1 to 9, 11 to 14); 62 (S1, 1, 2, 5 to 9, 11 to 14); 63 (1 to 9, 11 to 14); 64 (1 to 8, 11 to 14); 65 (1 to 9, 12 to 14); 66 (1 to 3, 4-6, 7-8, 9, 11, 13, 14); 67 (1 to 5, 7 to 9, 11, 12-13, 14); 68 (1-2, 3, 4, 5-6, 7-8, 9-1, 11-12)
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Library of Congress
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Preserved
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2025-04-07
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55 (12); 57 (1 to 14); 58 (1 to 11-12, 13-14, S1); 59 (1 to 11, 13, 14); 60 (3, 5 to 7, 9 to 11, 13, 14, S1); 61 (4 to 8, 10 to 14); 62 (2 to 4, 6 to 9, 11 to 14, S1); 63 (1, 3, 5, 6, 10 to 14); 64 (1 to 14); 65 (2 to 10-11, 12 to 14); 66 (10 to 13); 67 (4, 5)
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