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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 19 (1, 3 to 10); 20 (, 1 to 12); 21 (, 1 to 8); 22 (, 1 to 8); 23 (, 1 to 8); 24 (, 1 to 8); 25 (, 1 to 8); 26 (, 1 to 8); 27 (, 1 to 8); 28 (, 1 to 12); 29 (, 1 to 12); 30 (, 1 to 12); 31 (, 1 to 12); 32 (, 1 to 12); 33 (, 1 to 12); 34 (, 1 to 12); 35 (, 1 to 12); 36 (, 1 to 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 12); 47 (, 1 to 10, 12); 48 (, 1 to 4); 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 : 1978: 1(1-4), 1979/1980: 2(1-4), 1980: 3(1-4), 1981: 4(1-4), 1982: 5(1-4), 1983: 6(1-4), 1984: 7(1-4), 1985: 8(1-4), 1986: 9(1-4), 1987: 10(1-6), 1988: 11(1-6), 1989: 12(1-6), 1990: 13(1-6), 1991: 14(1-6), 1992: 15(1-6), 1993: 16(1-8), 1994: 17(1-8), 1995: 18(1-10), 1996: 19(1-10), 1997: 20(1-12), 1998: 21(1-8), 1999: 22(1-8), 2000: 23(1-8), 2001: 24(1-8), 2002: 25(1-8), 2003: 26(1-8), 2004: 27(1-6, 8), 2005: 28(1-2, 4-12), 2006: 29(1-12), 2007: 30(1-12), 2008: 31(1-12), 2009: 32(1-12), 2010: 33(1-12), 2011: 34(1-12), 2012: 35(1-12), 2013: 36(1-12), 2014: 37(1-12), 2015: 38(1-12), 2016: 39(1-12), 2017: 40(1-12), 2018: 41(1-12), 2019: 42(1-12), 2020: 43(1-12), 2021: 44(1-12), 2022: 45(1-12), 2023: 46(1-12), 2024: 47(1-12), 2025: 48(1-12), 2026: 49(1-2)
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LOCKSS Archive
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Preserved
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2026-02-09
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31 to 47
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CLOCKSS Archive
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In Progress
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2026-02-09
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31 to 48
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LOCKSS Archive
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In Progress
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2026-02-09
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48
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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 (suppl_1, 1 to 9, 11, 12); 41 (suppl_1, 1 to 9, 11, 12); 42 (Supplement_1, 1 to 9, 11, 12); 43 (Supplement_1, 1 to 9, 11, 12); 44 (Supplement_1, 1 to 9, 11, 12); 45 (Supplement_1, 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 : 4 (suppl_1, 1 to 9, 11, 12); 41 (suppl_1, 1 to 9, 11, 12); 42 (Supplement_1, 1 to 9, 11, 12); 43 (Supplement_1, 1 to 9, 11, 12); 44 (Supplement_1, 1 to 9, 11, 12); 45 (Supplement_1, 1 to 9, 11, 12)
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Library of Congress
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Preserved
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2025-04-07
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33 (1 to 12); 34 (1 to 12); 35 (1 to 12); 36 (1 to 12); 37 (1 to 12); 38 (1 to 12); 39 (1 to 12); 40 (1 to 9, 12); 41 (suppl_1, 1 to 12); 42 (Supplement_1, 1 to 9, 11, 12); 43 (1 to 6); 44 (1, 3 to 12); 45 (1 to 3)
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British Library
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Preserved
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2019-09-18
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Preserved : 40 (1; 6 to 7), 41 (2; 4; 6 to 8; 10 to 12), 42 (1; 3)
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