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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 17 (1 to 4); 18 (, 1 to 4); 19 (, 1 to 4); 20 (, 1 to 4); 21 (, 1 to 4); 22 (, 1 to 4); 23 (, 1 to 4); 24 (, 1 to 4); 25 (, 1 to 4); 26 (, 1 to 4); 27 (, 1 to 4); 28 (, 1 to 4); 29 (, 1 to 4); 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 8); 42 (, 1 to 8); 43 (, 1 to 8); 44 (, 1 to 8); 45 (, 1 to 6); 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 : 2000: 20(1-4), 2001: 21(1-4), 2002: 22(1-4), 2003: 23(1-4), 2004: 24(1-4), 2005: 25(1-4), 2006: 26(1-4), 2007: 27(1-4), 2008: 28(1-4), 2009: 29(1-4)
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LOCKSS Archive
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Preserved
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2026-02-09
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20 to 29
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 46
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Portico
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Preserved
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2026-02-12
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Preserved : 1981: 1(1), 1982: 2(1), 1983: 3(1), 1984: 4(1), 1985: 5(1), 1986: 6(1), 1987: 7(1), 1988: 8(1-2), 1989: 9(1-2), 1990: 10(1-2), 1991: 11(1-2), 1992: 12(1-3), 1993: 13(1-4), 1994: 14(1-4), 1995: 15(1-4), 1996: 16(1-4), 1997: 17(1-4), 1998: 18(1-4), 1999: 19(1-4), 2000: 20(1-4), 2001: 21(1-4), 2002: 22(1-4), 2003: 23(1-4), 2004: 24(1-4), 2005: 25(1-4), 2006: 26(1-4), 2007: 27(1-4), 2008: 28(1-4), 2009: 29(1-4), 2010: 30(1-6), 2011: 31(1-6), 2012: 32(1-6), 2013: 33(1-6), 2014: 34(1-6), 2015: 35(2-6), 2016: 36(1-6), 2017: 37(1-6), 2018: 38(1-6), 2018/2019: 39(1, S 1, 2-6), 2019/2020: 40(1-6), 2021: 41(1-8), 2022: 42(1-8), 2023: 43(1-8), 2024: 44(1-8), 2025: 45(1-8), 2026: 46(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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32, 39
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LOCKSS Archive
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Preserved
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2026-02-09
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33 to 38
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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 : 17 (1-4); 18 (1-4); 19 (1-4); 20 (1-4); 21 (1-4); 22 (1-4); 23 (1-4); 24 (1-4); 25 (1-4); 26 (1-4); 27 (1-4); 28 (1-4); 29 (1-4); 30 (1-6); 31 (2-6); 32 (1-6); 33 (1-6); 34 (supplement-1, 1-6); 35 (1-6); 36 (supplement-1, 1-6); 37 (1-6); 38 (1-6); 39 (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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38 (1 to 6); 39 (S1, 1 to 6); 40 (1 to 6); 41 (1 to 8); 42 (1 to 8); 43 (1 to 8); 44 (1 to 8); 45 (1)
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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, 2, 4); 3 (1 to 3); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (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 : 2 (1, 2, 4); 3 (1 to 3); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (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 : 3 (1 to 6); 4 (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 (Suppl 1, 1 to 6); 41 (1 to 8); 42 (1 to 8); 43 (1 to 8); 44 (1 to 8)
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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 to 6); 4 (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 (Suppl 1, 1 to 6); 41 (1 to 8); 42 (1 to 8); 43 (1 to 8); 44 (1 to 8)
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