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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 16 (1, 2, 4); 17 (, 2 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 (, 1-2, 3, 4); 27 (, 1-2, 3, 4); 28 (, 1 to 4); 29 (, 1 to 4); 30 (, 1, 2); 31 (, 1, 2); 32 (, 1-2, 3-4); 33 (, 1, 2-3, 4); 34 (, 1, 2, 3-4); 35 (, 1-4); 36 (, 1); 37 (, 1-2, 3-4); 38 (, 1, 2); 39 (, 1, 2); 40 (, 1, 2); 41 (, 1, 2); 42 (, 1, 2); 43 (, 1); 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 : 1982/1983: 2(1, 4)
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LOCKSS Archive
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In Progress
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2026-02-09
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2 to 38
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CLOCKSS Archive
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Preserved
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2026-02-09
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2 to 43
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Portico
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Preserved
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2026-02-12
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Preserved : 1984: 3(4), 1984/1985: 4(1, 4), 1985/1986: 5(1, 3-4), 1986/1987: 6(1-4), 1987/1988: 7(1-4), 1989: 8(2-4), 1989/1990: 9(1, 3), 1990/1991: 10(1-2, 4), 1991/1992: 11(1-3), 1992/1993: 12(1, 3-5), 1994: 13(1-2, 4), 1995: 14(1-2, 4), 1996: 15(1-4), 1997: 16(1-2, 4), 1998: 17(2-4), 1999: 18(1-4), 2000: 19(1-4), 2001: 20(1-4), 2002: 21(1-4), 2003: 22(1-4), 2004: 23(1-4), 2005: 24(1-4), 2006: 25(1-4), 2007: 26(1-4), 2008: 27(1-4), 2009: 28(1-4), 2010/2011: 29(1-4), 2012: 30(1-2), 2013: 31(1-2), 2014: 32(1-4), 2015: 33(1-4), 2016: 34(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 2017: 34(3-4), 2018: 35(1-4), 2018: 36(1-4), 2019: 37(1-4), 2020: 38(1, S 1, 2), 2021: 39(1, S 1, 2), 2022: 40(1-2), 2023: 41(1, S 1, 2), 2024: 42(1, S 1, 2), 2025: 43(1, S 1, 2)
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Library of Congress
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Preserved
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2025-04-07
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34 (3-4); 35 (1-4); 36 (1-4); 37 (1-2, 3-4); 38 (1, S1, 2); 39 (1, S1, 2); 40 (1, S1, 2); 41 (S1, 1, 2); 42 (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 : 41 (Suppl 1, 1, 2); 42 (1, 2)
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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 : 41 (Suppl 1, 1, 2); 42 (1, 2)
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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 : 16 (2); 17 (3); 18 (1-3); 19 (1-4); 20 (1, 2, 4); 21 (3, 4); 22 (1, 3, 4); 23 (1-4); 24 (1-4); 25 (1-4); 26 (1-2, 3, 4); 27 (1-2, 3, 4); 28 (1-4); 29 (1-4); 30 (1, 2); 31 (1, 2); 32 (1-2, 3-4); 33 (1, 2-3, 4); 34 (1, 2, 3-4); 35 (1-4); 36; 37
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