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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 to 4); 11 (, 1 to 4); 12 (, 1 to 4); 13 (, 1 to 4); 14 (, 1 to 4); 15 (, 1 to 4); 16 (, 1 to 4); 17 (, 1 to 6); 18 (, 1 to 6); 19 (, 1 to 6); 20 (, 1 to 6); 21 (, 1 to 12); 22 (, 1 to 12); 23 (, 1 to 12); 24 (, 1 to 12); 25 (, 1 to 12); 26 (, 1 to 7, 9, 11, 12); 27 (, 1 to 12); 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 12); 48 (, 1 to 12); 49 (, 1 to 12); 50 (, 1 to 12); 51 (, 1 to 8); 1974; 1975; 1976; 1977; 1978; 1979; 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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Internet Archive
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Preserved
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2025-08-08
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1 to 40
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 9, 16, 29 to 50
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Portico
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Preserved
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2026-02-12
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Preserved : 1974/1975: 1(1-4), 1976: 2(1-4), 1976/1977: 3(1-4), 1978: 4(1-4), 1979: 5(1-4), 1980: 6(1-4), 1981: 7(1-4), 1982: 8(1-4), 1983: 9(1-4), 1984: 10(1-4), 1985: 11(1-4), 1986: 12(1-4), 1987: 13(1-4), 1988: 14(1-4), 1989: 15(1-4), 1990: 16(1-4), 1991: 17(1-6), 1992: 18(1-6), 1993: 19(1-6), 1994: 20(1-6), 1995: 21(1-12), 1996: 22(1-12), 1997: 23(1-12), 1998: 24(1-12), 1999: 25(1-12), 2000: 26(1-12), 2001: 27(1-12), 2002: 28(1-8, 10-12), 2003: 29(1-12), 2004: 30(1-12), 2005: 31(1-12), 2006: 32(1-12), 2007: 33(1-12), 2008: 34(1-12), 2009: 35(1-12), 2010: 36(1-12), 2011: 37(1-12), 2012: 38(1-12), 2013: 39(1-12), 2014: 40(1-12), 2015: 41(1-12), 2016: 42(1-12), 2017: 43(1-12), 2018: 44(1-12), 2019: 45(1-12), 2020: 46(1-11), 2021: 47(2-4, 6-12), 2022: 48(1-12), 2023: 49(1-12), 2024: 50(1-12), 2025: 51(1-12), 2026: 52(1-3)
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CLOCKSS Archive
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In Progress
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2026-02-09
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1 to 33, 42 to 51
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LOCKSS Archive
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In Progress
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2026-02-09
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10 to 15, 17 to 28, 51
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CLOCKSS Archive
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Preserved
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2026-02-09
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34 to 41
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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 to 12), 41 (1 to 12), 42 (1 to 12), 43 (1 to 12), 44 (1 to 11)
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Library of Congress
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Preserved
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2025-04-07
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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 12); 48 (1 to 12); 49 (1 to 12); 50 (1 to 11)
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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 : 1 (1-4); 2 (3, 4); 3 (1-4); 4 (1-4); 5 (1-4); 6 (1-4); 7 (1-4); 8 (1-4); 9 (1-4); 10 (1-4); 11 (1-4); 12 (1-4); 13 (1-4); 14 (1-4); 15 (1-4); 16 (1-4); 17 (1-6); 18 (1-6); 19 (1-6); 20 (1-6); 21 (1-12); 22 (1-12); 23 (1-12); 24 (1-12); 25 (1-12); 26 (1-12); 27 (1-12); 28 (1-11); 29 (1-12); 30 (1-12); 31 (1-12); 32 (1-12); 33 (1-12); 34 (1-12); 35 (3-12); 36 (1-12); 37 (1-9, 11); 38 (1-12); 39 (2-12); 40 (1-12); 41 (1-12); 42 (1-12); 43 (1-12); 44 (1-12); 45 (1-12)
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