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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, 2); 9 (, 1, 2); 10 (, 1, 2); 11 (, 1, 2); 12 (, 1, 2); 13 (, 1, 2); 14 (, 1, 2); 15 (, 1, 2); 16 (, 1, 2); 17 (, 1, 2); 18 (, 1/2); 19 (, 1, 2); 20 (, 1, 2); 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989
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Portico
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Preserved
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2026-02-12
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Preserved : 1970: 1(1-2), 1971: 2(1-2), 1972: 3(1-2), 1973: 4(1-2), 1974: 5(1-2), 1975: 6(1-2), 1976: 7(1-2), 1977: 8(1-2), 1978: 9(1-2), 1979: 10(1-2), 1980: 11(1-2), 1981: 12(1-2), 1982: 13(1-2), 1983: 14(1-2), 1984: 15(1-2), 1985: 16(1-2), 1986: 17(1-2), 1987: 18(1-2), 1988: 19(1-2), 1989: 20(1-2)
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LOCKSS Archive
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In Progress
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2026-02-09
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Scholars Portal
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Preserved
|
2025-09-02
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Preserved : 21 (1, 2); 22 (, 1, 2); 23 (, 1, 2); 24 (, 1, 2); 25 (, 1, 2); 26 (, 1, 2); 27 (, 1, 2); 28 (, 1, 2); 29 (, 1, 2); 30 (, 1, 2); 31 (, 1, 2); 32 (, 1, 2); 33 (, 1, 2); 34 (, 1, 2); 35 (, 1, 2); 36 (, 1, 2); 37 (, 1, 2); 38 (, 1, 2); 39 (, 1, 2); 40 (, 1, 2); 41 (, 1, 2); 42 (, 1, 2); 43 (, 1, 2); 44 (, 1, 2); 45 (, 1, 2); 46 (, 1, 2); 47 (, 1, 2); 48 (, 1 to 4); 49 (, 1 to 4); 50 (, 1 to 4); 51 (, 1 to 4); 52 (, 1 to 4); 53 (, 1 to 4); 54 (, 1 to 4); 55 (, 1 to 4); 56 (, 1, 2); 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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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 56
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Portico
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Preserved
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2026-02-12
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Preserved : 1989: 20(2), 1990: 21(1-2), 1991: 22(1-2), 1992: 23(1-2), 1993: 24(1-2), 1994: 25(1-2), 1995: 26(1-2), 1996: 27(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1999: 30(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 2000: 31(2)
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Portico
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Preserved
|
2026-02-12
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Preserved : 2002: 33(2), 2003: 34(2), 2004: 35(1-2), 2005: 36(2)
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Portico
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Preserved
|
2026-02-12
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Preserved : 2007: 38(1)
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Portico
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Preserved
|
2026-02-12
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Preserved : 2008: 39(1-2), 2009: 40(1-2), 2010: 41(1-2), 2011: 42(1-2), 2012: 43(1-2), 2013: 44(1-2), 2014: 45(1, S 1, 2), 2015: 46(1-2), 2016: 47(1-2), 2017: 48(1-4), 2018: 49(1-4), 2019: 50(1-4), 2019/2020: 51(1-4), 2021: 52(1-4), 2022: 53(1-4), 2023: 54(1-4), 2024: 55(1-2, 4), 2025: 56(1-4)
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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 : 3 (1, 2); 4 (1, 2); 5 (1 to 4); 28 (1, 2); 29 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1, 2); 34 (1, 2); 35 (1, 2); 36 (1, 2); 37 (1, 2); 38 (1, 2); 39 (1, 2); 41 (1, 2); 42 (1, 2); 43 (1, 2); 44 (1, 2); 45 (1, 2); 46 (1, 2); 47 (1, 2); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4)
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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 : 3 (1, 2); 4 (1, 2); 5 (1 to 4); 28 (1, 2); 29 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1, 2); 34 (1, 2); 35 (1, 2); 36 (1, 2); 37 (1, 2); 38 (1, 2); 39 (1, 2); 41 (1, 2); 42 (1, 2); 43 (1, 2); 44 (1, 2); 45 (1, 2); 46 (1, 2); 47 (1, 2); 48 (1 to 4); 49 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4)
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Library of Congress
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Preserved
|
2025-04-07
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49 (1 to 4); 50 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1, 2)
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National Library of the Netherlands
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Preserved
|
2024-12-15
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Preserved : 28 (2); 29 (1, 2); 30 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1, 2); 34 (1, 2); 35 (1, 2); 36 (1, 2); 37 (1, 2); 38 (1, 2); 39 (1, 2); 40 (1, 2); 41 (1, 2); 42 (1, 2); 43 (1, 2); 44 (1, 2); 45 (supplement-1, 1, 2); 46; 47 (1); 48 (2-4); 49 (1, 2, 4); 50 (1-3)
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