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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 4); 7 (, 1 to 4); 8 (, 1 to 4); 9 (, 1 to 4); 10 (, 1, 2-3, 4); 11 (, 1 to 4); 12 (, 1 to 4); 13 (, 1-2, 3, 4); 14 (, 1, 2-4); 15 (, 1 to 4); 16 (, 1-4); 17 (, 1 to 4); 18 (, 1 to 4); 19 (, 1 to 4); 20 (, 1, 2-3, 4); 21 (, 1, 2, 3-4); 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 8); 37 (, 1 to 8); 38 (, 1 to 8); 39 (, 1 to 8); 40 (, 1 to 8); 41 (, 1 to 5, 6-7, 8); 42 (, 1 to 8); 43 (, 1 to 8); 44 (, 1 to 5); 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1989; 1990; 1991; 1992; 1993; 1994; 1996; 1997; 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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Internet Archive
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Preserved
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2025-08-08
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1 to 10
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Portico
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Preserved
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2026-02-12
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Preserved : 1978: 2(1), 1979: 3(1), 1980: 4(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1981: 5(1), 1982: 6(1), 1983: 7(1), 1984: 8(1-4), 1985: 9(1-4), 1986: 10(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1989: 10(4), 1989: 11(1-4), 1989/1990: 12(1-4), 1991/1992: 13(3-4), 1992: 14(1), 1993: 15(1-4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1996/1997: 17(1-4), 1997/1999/2000: 18(1-4), 2000/2001: 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: 29(1-4), 2011: 30(1-6), 2012: 31(1-6), 2013: 32(1-6), 2014: 33(1-6), 2015: 34(1-6), 2016: 35(1-6), 2017: 36(1-8), 2018: 37(1-8), 2019: 38(1-8), 2020: 39(1-8), 2021: 40(1-8), 2022: 41(1-8), 2023: 42(1-8), 2024: 43(1-8), 2025: 44(1-8)
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 43
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CLOCKSS Archive
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Preserved
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2026-02-09
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ahead-of-print to 44
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LOCKSS Archive
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In Progress
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2026-02-09
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44
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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 (2 to 8); 34 (4); 37 (8); 38 (2, 4); 39 (2, 4 to 8); 41 (1 to 5, 6-7, 8); 42 (1 to 8); 43 (1 to 8); 44 (1 to 3)
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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 : 21 (1, 2, 3-4); 22 (1-4); 23 (1-4); 24 (1-4); 25 (1-4); 26 (1-4); 27 (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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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 8); 37 (1 to 8); 38 (1 to 8); 39 (1 to 8); 40 (1 to 8); 41 (1 to 6-7, 8); 42 (1 to 8); 43 (1 to 6)
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