Scholars Portal
1946-2025
Preserved
2025-09-02
Preserved : 1 (1); 2 (, 1, 2); 3 (, 1 to 3); 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 5); 24 (, 1 to 5); 25 (, 1 to 5); 26 (, 1 to 5); 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 5); 40 (, 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 to 5); 48 (, 1 to 5); 49 (, 1 to 5); 50 (, 1 to 5); 51 (, 1 to 5); 52 (, 1 to 5); 53 (, 1 to 6); 54 (, 1 to 6); 55 (, 1 to 6); 56 (, 1 to 6); 57 (, 1 to 6); 58 (, 1 to 6); 59 (, 1 to 6); 60 (, 1 to 6); 61 (, 1 to 6); 62 (, 1 to 6); 63 (, 1 to 6); 64 (, 1 to 6); 65 (, 1 to 6); 66 (, 1 to 6); 67 (, 1 to 6); 68 (, 1 to 6); 69 (, 1 to 6); 70 (, 1 to 6); 71 (, 1 to 6); 72 (, 1 to 6); 73 (, 1 to 6); 74 (, 1 to 6); 75 (, 1 to 6); 76 (, 1 to 6); 77 (, 1 to 6); 78 (, 1 to 6); 79 (, 1 to 6); 80 (, 1 to 4); 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 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
Internet Archive
1946-2014
Preserved
2025-08-08
1 to 69
CLOCKSS Archive
1946-2025
Preserved
2026-02-09
1 to 80
Portico
1946-2025
Preserved
2026-02-12
Preserved : 1946: 1(1), 1947: 2(1-2), 1948: 3(1-3), 1949: 4(1-4), 1950: 5(1-4), 1951: 6(1-4), 1952: 7(1-4), 1953: 8(1-4), 1954: 9(1-4), 1955: 10(1-4), 1956: 11(1-4), 1957: 12(1-4), 1958: 13(1-4), 1959: 14(1-4), 1960: 15(1-4), 1961: 16(1-4), 1962: 17(1-4), 1963: 18(1-4), 1964: 19(1-2, S 2, 3-4), 1965: 20(1-4), 1966: 21(1-4), 1967: 22(1-4), 1968: 23(1-5), 1969: 24(1-5), 1970: 25(1-5), 1971: 26(1-5), 1972: 27(1-5), 1973: 28(1-5), 1974: 29(1-5), 1975: 30(1-5), 1976: 31(1-5), 1977: 32(1-5), 1978: 33(1-5), 1979: 34(1-5), 1980: 35(1-5), 1981: 36(1-5), 1982: 37(1-5), 1983: 38(1-5), 1984: 39(1-5), 1985: 40(1-5), 1986: 41(1-5), 1987: 42(1-5), 1988: 43(1-5), 1989: 44(1-5), 1990: 45(1-5), 1991: 46(1-5), 1992: 47(1-5), 1993: 48(1-5), 1994: 49(1-5), 1995: 50(1-5), 1996: 51(1-5), 1997: 52(1-5), 1998: 53(1-6), 1999: 54(1-6), 2000: 55(1-6), 2001: 56(1-6), 2002: 57(1-6), 2003: 58(1-6), 2004: 59(1-6), 2005: 60(1-6), 2006: 61(1-6), 2007: 62(1-6), 2008: 63(1-6), 2009: 64(1-6), 2010: 65(1-6), 2011: 66(1-6), 2012: 67(1-6), 2013: 68(1-6), 2014: 69(1-6), 2015: 70(1-6), 2016: 71(1-6), 2017: 72(1-6), 2018: 73(1-6), 2019: 74(1-6), 2020: 75(1-6), 2021: 76(1-6), 2022: 77(1-6), 2023: 78(1-6), 2024: 79(1-6), 2025: 80(1-6)
National Digital Preservation Program, China
1997-2022
Preserved
2025-10-23
Preserved : 6 (1 to 6); 7 (1 to 6); 52 (1 to 5); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6); 61 (1 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 6); 68 (1 to 6); 69 (1 to 6); 71 (1 to 6); 72 (1 to 6); 73 (1 to 6); 74 (1 to 6); 75 (1 to 6); 76 (1 to 6); 77 (1 to 6)
National Digital Preservation Program, China
1997-2022
Preserved
2025-12-04
Preserved : 6 (1 to 6); 7 (1 to 6); 52 (1 to 5); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 6); 61 (1 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 6); 66 (1 to 6); 67 (1 to 6); 68 (1 to 6); 69 (1 to 6); 71 (1 to 6); 72 (1 to 6); 73 (1 to 6); 74 (1 to 6); 75 (1 to 6); 76 (1 to 6); 77 (1 to 6)
National Library of the Netherlands
2006-2007
Preserved
2024-12-15
Preserved : 61 (1-6); 62 (1-6)