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CLOCKSS Archive
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In Progress
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2026-02-09
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1 to 87
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LOCKSS Archive
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In Progress
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2026-02-09
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1 to 61, 87
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LOCKSS Archive
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Preserved
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2026-02-09
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62 to 86
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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); 2 (, 1, 2); 3 (, 1, 2); 4 (, 1, 2); 5 (, 1, 2); 6 (, 1, 2); 7 (, 1, 2); 8 (, 1 to 4); 9 (, 1, 2, 3-4); 10 (, 1, 2, 3-4); 11 (, 1, 2, 3-4); 12 (, 1, 2, 3-4); 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, 2, 3-4); 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 to 6); 27 (, 1-2, 3 to 6); 28 (, 1 to 6); 29 (, 1 to 6); 30 (, 1 to 4, 5-6); 31 (, 1 to 6); 32 (, 1 to 6); 33 (, 1 to 6); 34 (, 1 to 6); 35 (, 1-3, 4 to 6); 36 (, 1 to 4, 5-6); 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 (, 1 to 6); 71 (, 1, 2, 3-4, 5, 6); 72 (, 1 to 8); 73 (, 1 to 8); 74 (, 1 to 8); 75 (, 1 to 8); 76 (, 2 to 8); 77 (, 1 to 8); 78 (, 1 to 8); 79 (, 1 to 8); 80 (, 1 to 8); 81 (, 1 to 8); 82 (, 1); 1939; 1940; 1941; 1942; 1943; 1944; 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; 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
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Internet Archive
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Preserved
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2025-08-08
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56 to 58
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Portico
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Preserved
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2026-02-12
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Preserved : 1996: 54(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1998: 56(6)
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Portico
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Preserved
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2026-02-12
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Preserved : 2003: 61(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 2007: 65(1-6), 2008: 66(1-6), 2009: 67(1-6), 2010: 68(1-6), 2010/2011: 69(1-6), 2011/2012: 70(1-6), 2013: 71(1-6), 2013/2014: 72(1-8), 2014/2015: 73(1-8)
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CLOCKSS Archive
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Preserved
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2026-02-09
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ahead-of-print to 82
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 82
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Portico
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Preserved
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2026-02-12
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Preserved : 1984: 42(1-6), 1985: 43(1-6), 1986: 44(1-6), 1987: 45(1-6), 1988: 46(1-6), 1989: 47(1-6), 1990: 48(1-6), 1991: 49(1-6), 1992: 50(1-6), 1993: 51(1-6), 1994: 52(1-6), 1995: 53(1-6), 1996: 54(1-6), 1997: 55(1-6), 1998: 56(1-6), 1999: 57(1-6), 2000: 58(1-6), 2001: 59(1-6), 2002: 60(1-6), 2003: 61(1-6), 2004: 62(1-6), 2005: 63(1-6), 2006: 64(1-6), 2007: 65(1-6), 2007/2008: 66(1-6), 2009: 67(1-6), 2010: 68(1-6), 2011: 69(1-6), 2012: 70(1-6), 2013: 71(1-6), 2014: 72(1-8), 2015: 73(1-8), 2016: 74(1-8), 2017: 75(1-8), 2018: 76(1-8), 2019: 77(1-8), 2020: 78(1-8), 2021: 79(1-8), 2022: 80(1-8), 2023: 81(1-8), 2024: 82(1)
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Public Knowledge Project PLN
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Preserved
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2026-02-12
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Preserved : 1 (2); 2 (1, 2); 3 (1, 2); 4 (1, 2); 5 (1, 2); 6 (1, 2); 7 (1, 2); 8 (1 to 4); 9 (1, 2, 3-4); 10 (1, 2, 3-4); 11 (1, 2, 3-4); 12 (1, 2, 3-4); 13 (2 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1, 2, 4); 19 (1, 2); 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 to 6); 27 (1-2, 3 to 6); 28 (1 to 6); 29 (1 to 6); 30 (1 to 4, 5-6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1-3, 4 to 6); 36 (1 to 4, 5-6); 37 (1, 3 to 6); 38 (1 to 6); 39 (1, 2, 6); 40 (1 to 3, 5, 6); 41 (2 to 6); 42 (1 to 4, 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, 3 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 5); 56 (1 to 6); 57 (1 to 6); 58 (1 to 6); 59 (1 to 5); 60 (1 to 3, 5); 61 (1 to 6); 62 (1 to 6); 63 (1 to 6); 64 (1 to 6); 65 (1 to 5); 66 (1 to 6); 67 (1 to 6); 68 (1 to 6); 69 (1 to 6); 70 (1 to 6); 71 (1, 2, 3-4, 5, 6); 72 (1 to 8); 73 (1 to 8); 74 (1 to 8); 75 (1 to 8); 76 (1 to 8); 77 (1 to 8); 78 (1 to 8); 79 (1 to 8); 80 (1 to 8); 81 (1 to 7); 82 (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 : 6 (1 to 6); 7 (1 to 6); 8 (1 to 8); 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, 2, 3-4, 5, 6); 72 (1 to 8); 73 (1 to 8); 74 (1 to 8); 75 (1 to 8); 76 (1 to 8); 77 (1 to 8); 78 (1 to 8); 79 (1 to 8); 81 (1 to 8); 82 (1)
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