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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 4); 2 (, 1 to 4); 3 (, 1 to 4); 4 (, 1 to 4); 5 (, 1 to 4); 6 (, 1 to 6); 7 (, 1 to 6); 8 (, 1 to 6); 9 (, 1 to 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 3, 4-5, 6, 7, 8-9, 10, 11-12); 32 (, 1-2, 3 to 6, 7-8, 9, 10, 11-12); 33 (, 1 to 7, 8-9, 10-11, 12); 34 (, 1 to 7, 8-9, 10 to 12); 35 (, 1, 2, 3-4, 5, 6-7, 8, 9-10, 11, 12); 36 (, 1, 2-3, 4, 5-6, 7 to 9, 10-11, 12); 37 (, 1 to 12); 38 (, 1 to 12); 39 (, 1 to 12); 40 (, 1 to 12); 41 (, 1 to 12); 42 (, 1 to 12); 43 (, 1 to 12); 44 (, 1 to 12); 45 (, 1 to 12); 46 (, 1 to 9); 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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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 47
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Portico
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Preserved
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2026-02-12
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Preserved : 1980: 1(1-4), 1981: 2(1-4), 1982: 3(1-4), 1983: 4(1-4), 1984: 5(1-4), 1985: 6(1-6), 1986: 7(1-6), 1987: 8(1-6), 1988: 9(1-6), 1989: 10(1-6), 1990: 11(1-6), 1991: 12(1-6), 1992: 13(1-6), 1993: 14(1-6), 1994: 15(1-6), 1995: 16(1-6), 1996: 17(1-6), 1997: 18(6), 1998: 19(3, 5-6), 1999: 20(3, 6)
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Portico
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Preserved
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2026-02-12
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Preserved : 2001: 22(3), 2002: 23(1, 3)
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Portico
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Preserved
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2026-02-12
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Preserved : 2004: 25(3), 2005: 26(3, 6), 2006: 27(2-3)
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Portico
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Preserved
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2026-02-12
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Preserved : 2007: 28(2, 4)
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Portico
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Preserved
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2026-02-12
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Preserved : 2008: 29(5-6), 2009: 30(1-6), 2010: 31(1-7, 11-12), 2011: 32(1-12), 2012: 33(3-6, 8-12), 2013: 34(1-7, 11-12), 2004/2014: 35(1-7, 9-12), 2004/2015: 36(2-12), 2004/2016: 37(1-12), 2017: 38(1-12), 2018: 39(1-12), 2019: 40(1-12), 2020: 41(1-12), 2021: 42(1-12), 2022: 43(1-12), 2023: 44(1-12), 2024: 45(1-11), 2025: 46(1-12), 2025/2026: 47(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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33, 40
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LOCKSS Archive
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Preserved
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2026-02-09
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34 to 39
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Library of Congress
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Preserved
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2025-04-07
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38 (1 to 12); 39 (1 to 12); 40 (1 to 12); 41 (1 to 12); 42 (1 to 12); 43 (1 to 12); 44 (1 to 12); 45 (1 to 10); 46 (2)
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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 : 2 (1 to 6); 3 (1 to 6); 4 (1 to 9, 11, 12); 18 (1 to 6); 19 (1 to 5); 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); 31 (1 to 4, 6 to 8, 11); 32 (1, 3 to 7, 9); 33 (1 to 8, 12); 34 (1 to 8, 11, 12); 35 (1 to 3, 5, 6, 8, 9, 11, 12); 36 (1, 2, 4, 5, 7 to 9, 12); 37 (1 to 9, 11, 12); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (1 to 9, 11, 12)
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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 : 2 (1 to 6); 3 (1 to 6); 4 (1 to 9, 11, 12); 18 (1 to 6); 19 (1 to 5); 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); 31 (1 to 4, 6 to 8, 11); 32 (1, 3 to 7, 9); 33 (1 to 8, 12); 34 (1 to 8, 11, 12); 35 (1 to 3, 5, 6, 8, 9, 11, 12); 36 (1, 2, 4, 5, 7 to 9, 12); 37 (1 to 9, 11, 12); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (1 to 9, 11, 12)
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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 : 19 (1-6); 20 (1-6); 21 (1-6); 22 (1-6); 23 (1-6); 24 (1-6); 25 (1-6); 26 (1-6); 27 (1, 2, 4-6); 28 (1-6); 29 (1-6); 30 (1-6); 31 (1-3, 4-5, 6, 7, 8-9, 10, 11-12); 32 (1-2, 3-6, 7-8, 9, 10, 11-12); 33 (1-7, 8-9, 10-11, 12); 34 (1-7, 8-9, 10-12); 35 (1, 2, 3-4, 5, 6-7, 8, 9-10, 11, 12); 36 (1, 2-3, 4, 5-6, 7-9, 10-11, 12); 37 (1-4, 6-12); 38 (1-12); 39 (1-10, 12); 40 (1-11)
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