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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 (, 1); 3 (, 1); 4 (, 1); 5 (, 1); 6 (, 1); 7 (, 1); 8 (, 1); 9 (, 1); 10 (, 1); 11 (, 1); 12 (, 1); 13 (, 1); 14 (, 1); 15 (, 1); 16 (, 1); 17 (, 1); 18 (, 1); 19 (, 1); 20 (, 1); 21 (, 1); 22 (, 1); 23 (, 1); 24 (, 1); 25 (, 1); 26 (, 1); 27 (, 1); 28 (, 1); 29 (, 1); 30 (, 1); 31 (, 1); 32 (, 1); 33 (, 1); 34 (, 1); 35 (, 1); 36 (, 1); 37 (, 1); 38 (, 1); 39 (, 1); 40 (, 1); 41 (, 1); 42 (, 1); 43 (, 1); 44 (, 1); 45 (, 1); 46 (, 1); 47 (, 1); 48 (, 1); 49 (, 1); 50 (, 1, 2, 3-4); 51 (, 1-4); 52 (, 1 to 4); 53 (, 1 to 4); 54 (, 1 to 4); 55 (, 1 to 4); 56 (, 1 to 4); 57 (, 1 to 4); 58 (, 1 to 4); 59 (, 1 to 4); 60 (, 1 to 4); 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 4); 71 (, 1 to 4); 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 : 1979: 1(1), 1980: 2(1), 1980: 3(1), 1981: 4(1), 1981: 5(1), 1982: 6(1), 1982: 7(1), 1983: 8(1), 1983: 9(1), 1984: 10(1), 1984: 11(1), 1985: 12(1), 1985: 13(1), 1986: 14(1), 1986: 15(1), 1987: 16(1), 1987: 17(1), 1988: 18(1), 1988: 19(1), 1989: 20(1), 1989: 21(1), 1990: 22(1), 1990: 23(1), 1991: 24(1), 1991: 25(1), 1992: 26(1), 1992: 27(1), 1993: 28(1), 1993: 29(1), 1994: 30(1), 1994: 31(1), 1995: 32(1), 1995: 33(1), 1996: 34(1), 1996: 35(1)
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 72
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Portico
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Preserved
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2026-02-12
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Preserved : 1999: 41(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 2004: 50(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 2006: 52(1, 3), 2007: 53(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 2008: 54(4)
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Portico
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Preserved
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2026-02-12
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Preserved : 2011: 57(4), 2012: 58(3), 2013: 59(1-4), 2014: 60(2-3), 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), 2026: 72(1)
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LOCKSS Archive
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In Progress
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2026-02-09
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58, 65
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LOCKSS Archive
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Preserved
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2026-02-09
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59 to 64
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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 : 41 (1); 52 (2-4); 53 (1-4); 54 (1-4); 55 (1-4); 56 (1-4); 57 (1-4); 58 (1-4); 59 (1-4); 60 (1-4); 61 (1-4); 62 (1-4); 63 (1-4); 64 (1-4); 65 (1-4)
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Library of Congress
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Preserved
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2025-04-07
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64 (2 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 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 : 4 (1); 5 (2, 3); 6 (1 to 4); 7 (1 to 4); 36 (1); 37; 38; 39; 41; 42; 43; 44; 45; 46; 47; 48; 49; 51; 52 (2 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 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)
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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 : 4 (1); 5 (2, 3); 6 (1 to 4); 7 (1 to 4); 36 (1); 37; 38; 39; 41; 42; 43; 44; 45; 46; 47; 48; 49; 51; 52 (2 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 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)
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