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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 3); 2 (, 1 to 3); 3 (, 1-2, 3); 4 (, 1 to 3); 5 (, 1 to 3); 6 (, 1 to 3); 7 (, 1 to 3); 8 (, 1 to 4); 9 (, 1 to 4); 10 (, 1, 2-3, 4); 11 (, 1 to 4); 12 (, 1 to 3); 13 (, 1 to 3); 14 (, 1, 2-3); 15 (, 1 to 3); 16 (, 1 to 3); 17 (, 1, 2); 18 (, 1-3); 19 (, 1 to 3); 20 (, 1 to 3); 21 (, 1 to 3); 22 (, 1-3); 23 (, 1-3); 24 (, 1-3); 25 (, 1-3); 26 (, 1 to 3); 27 (, 1-3); 28 (, 1-2, 3); 29 (, 2, 3); 30 (, 3); 31 (, 1 to 3); 32 (, 1 to 3); 33 (, 1-2, 3); 34 (, 1 to 3); 35 (, 1 to 3); 36 (, 1 to 3); 37 (, 1-2, 3); 38 (, 1 to 3); 39 (, 1 to 3); 40 (, 1-2); 41 (, 1 to 3); 42 (, 1 to 3); 43 (, 1 to 3); 44 (, 1 to 3); 45 (, 1 to 3); 46 (, 1, 2); 47 (, 1 to 3); 48 (, 1 to 3); 49 (, 2, 3); 50 (, 1 to 3); 51 (, 1 to 3); 52 (, 1 to 3); 53 (, 1 to 3); 54 (, 1 to 3); 55 (, 1 to 3); 56 (, 1 to 3); 57 (, 1, 2-3); 58 (, 1-3); 59 (, 1-2, 3); 60 (, 1); 61 (, 1 to 4); 62 (, 1 to 4); 63 (, 1 to 4); 64 (, 1 to 4); 65 (, 1 to 4); 66 (, 1 to 4); 67 (, 1 to 4); 68 (, 1 to 4); 69 (, 1 to 4); 70 (, 2 to 4); 71 (, 1, 2); 1945; 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; 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; 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 60
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 42, 44 to 71
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Portico
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Preserved
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2026-02-12
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Preserved : 1945: 1(1-3), 1946: 2(1-3), 1947: 3(1-3), 1948: 4(1-3), 1949: 5(1-3), 1950: 6(1-3), 1951: 7(1-3), 1952: 8(1-4), 1953: 9(1-4), 1954: 10(1-4), 1955: 11(1-4), 1956: 12(1-3), 1957: 13(1-3), 1958: 14(1-3), 1959: 15(1-3), 1960: 16(1-3), 1961: 17(1-2), 1962: 18(1-3), 1963: 19(1-3), 1964: 20(1-3), 1965: 21(1-3), 1966: 22(1-3), 1967: 23(1-3), 1968: 24(1-3), 1969: 25(1-3), 1970: 26(1-3), 1971: 27(1-3), 1977: 28(1-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 1978: 29(2-3), 1979: 30(3), 1980: 31(1-3), 1981: 32(1-3), 1982: 33(1-3), 1983: 34(1-3), 1984: 35(1-3), 1985: 36(1-3), 1986: 37(1-3), 1987: 38(1-3), 1988: 39(1-3), 1989: 40(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 41(1-3), 1991: 42(1-3), 1992: 43(1-3), 1993: 44(1-3), 1994: 45(1-3), 1995: 46(1-2), 1996: 47(1-3), 1997: 48(1-3), 1998: 49(1-3), 1999: 50(1-3), 2000: 51(1-3), 2001: 52(1-3), 2002: 53(1-3), 2003: 54(1-3), 2004: 55(1-3), 2005: 56(1-3), 2006: 57(1-3), 2007: 58(1-3), 2008: 59(1-3), 2009: 60(1), 2015: 61(1-4), 2016: 62(1-4), 2017: 63(1-4), 2018: 64(1-4), 2019: 65(1-4), 2020: 66(1-4), 2021: 67(1-4), 2022: 68(1-4), 2023: 69(1-4), 2024: 70(1-4), 2025: 71(1-4)
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 42, 44 to 70
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CLOCKSS Archive
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Preserved
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2026-02-09
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59 to 63
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LOCKSS Archive
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In Progress
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2026-02-09
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71
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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 to 3); 6 (1); 7 (2 to 4); 48 (1 to 3); 49 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1 to 3); 56 (1 to 3); 57 (1, 2-3); 58 (1-3); 59 (3); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1 to 3)
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Library of Congress
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Preserved
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2025-04-07
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61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1 to 4); 70 (1 to 3)
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