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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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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1 to 6); 2 (, 1 to 6); 3 (, 1 to 6); 4 (, 1 to 6); 5 (, 1 to 6); 6 (, 1 to 6); 7 (, 1 to 6); 8 (, 1 to 6); 9 (, 1 to 4, 5-6); 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 to 6); 32 (, 1 to 6); 33 (, 1 to 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 to 6); 42 (, 1 to 6); 43 (, 1 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); 50 (, 1 to 6); 51 (, 1 to 6); 52 (, 1 to 6); 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 (, 4 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 4); 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
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Portico
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Preserved
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2026-02-12
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Preserved : 1950: 1(2), 1951: 2(2-6), 1952: 3(3, 6), 1953: 4(1), 1954: 5(1, 4), 1955: 6(4-5), 1956: 7(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1959: 10(1, 5-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1960: 11(6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1962: 13(5-6), 1963: 14(5-6), 1964: 15(4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1965: 16(5), 1966: 17(3), 1967: 18(2, 6), 1968: 19(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1969: 20(6), 1970: 21(1, 3-4), 1971: 22(2, 4), 1972: 23(2, 4, 6), 1973: 24(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1974: 25(6), 1975: 26(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1976: 27(6), 1977: 28(1-2, 6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1979: 30(1, 4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1980: 31(6), 1981: 32(3)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1982: 33(4), 1983: 34(2-3)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1984: 35(3)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1985: 36(5-6), 1986: 37(6)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1988: 39(2, 4, 6), 1989: 40(5-6)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1994: 45(5)
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Portico
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Preserved
|
2026-02-12
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Preserved : 1997: 48(1-6), 1998: 49(1-6), 1999: 50(1-6), 2000: 51(1-6), 2001: 52(1-6), 2002: 53(1-6), 2003: 54(1-6), 2004: 55(1-6), 2005: 56(1-6), 2005/2006: 57(1-6), 2007: 58(1-6), 2008: 59(1-6), 2009: 60(1-6), 2010: 61(1-6), 2011: 62(1-6), 2012: 63(1-4, 6), 2013: 64(1-3, 6), 2014: 65(1-6), 2015: 66(2-6), 2016: 67(1-6), 2017: 68(1-6), 2018: 69(1-6), 2019: 70(1-6), 2020: 71(1-6), 2021: 72(1-6), 2022: 73(1-6), 2023: 74(1-6), 2024: 75(1-6), 2024/2025: 76(1-6), 2025/2026: 77(1-2)
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LOCKSS Archive
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In Progress
|
2026-02-09
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63, 70
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LOCKSS Archive
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Preserved
|
2026-02-09
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64 to 69
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CLOCKSS Archive
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Preserved
|
2026-02-09
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1 to 77
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Library of Congress
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Preserved
|
2025-04-07
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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)
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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 : 48 (2-4, 6); 49 (1, 4, 6); 50 (2, 3, 5, 6); 51 (1-3, 5, 6); 52 (1-6); 53 (1-6); 54 (1, 3-5); 55 (1-3); 56 (2); 57 (4, 5); 58 (1, 2, 4-6); 59 (1-6); 60 (1-6); 61 (1-6); 62 (1-6); 63 (1, 2, 4-6); 64 (1-4, 6); 65 (1-4); 66 (2-6); 67 (2-4); 68 (1-6); 69 (1-3, 5); 70 (1-5)
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National Digital Preservation Program, China
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Preserved
|
2025-10-23
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Preserved : 5 (1 to 6); 6 (1 to 6); 7 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 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)
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National Digital Preservation Program, China
|
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Preserved
|
2025-12-04
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Preserved : 5 (1 to 6); 6 (1 to 6); 7 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 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)
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