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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, 2 to 4); 4 (, 1 to 4); 5 (, 1 to 4); 6 (, 1 to 4); 7 (, 1 to 3, 4_suppl); 8 (, 1 to 4); 9 (, 1 to 3, 4_suppl); 10 (, 1 to 3, 4_suppl); 11 (, 1 to 3, 4_suppl); 12 (, 1 to 4); 13 (, 1 to 4); 14 (, 1 to 4); 15 (, 1 to 4); 16 (, 1 to 4); 17 (, 1 to 4); 18 (, 1 to 3, 4); 19 (, 1 to 4); 20 (, 1 to 4); 21 (, 1 to 6); 22 (, 1_suppl, 2 to 6, 99); 23 (, 1 to 5, 6_suppl); 24 (, 1 to 6); 25 (, 1 to 6); 26 (, 1 to 6); 27 (, 1 to 6); 28 (, 1 to 6); 29 (, 1 to 6); 30 (, 1 to 4 to 6); 31 (, 1 to 6); 32 (, 1 to 6); 33 (, 1 to 8); 34 (, 1 to 8); 35 (, 1 to 8); 36 (, 1 to 8); 37 (, 1 to 8); 38 (, 1_suppl, 2 to 8); 39 (, 1 to 8); 40 (, 1 to 8); 41 (, 1 to 8); 42 (, 1 to 8); 43 (, 1 to 6, 7-8); 44 (, 1 to 8); 45 (, 1 to 5); 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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CLOCKSS Archive
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In Progress
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2026-02-09
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1 to 25, 27, 36 to 45
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LOCKSS Archive
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In Progress
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2026-02-09
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1 to 22, 45
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Portico
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Preserved
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2026-02-12
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Preserved : 1981: 1(1-4), 1982: 2(1-4), 1983: 3(1-3, 3, S, 4), 1984: 4(1-4), 1985: 5(1-4), 1986: 6(1-4), 1987: 7(1-4, 4, S), 1988: 8(1-4), 1989: 9(1-4, 4, S), 1990: 10(1-4, 4, S), 1991: 11(1-4, 4, S), 1992: 12(1-4), 1993: 13(1-4), 1994: 14(1-4), 1995: 15(1-4), 1996: 16(1-4), 1997: 17(1-4), 1998: 18(1-2, 2, S, 3-4), 1999: 19(1-4), 2000: 20(1-4), 2001: 21(1-6), 2002: 22(1-6), 2003: 23(1-6, 6, S), 2004: 24(1-6), 2005: 25(1-6), 2006: 26(1-6), 2007: 27(1-6), 2008: 28(1-6), 2009: 29(1-6), 2010: 30(1-6), 2011: 31(1-6), 2012: 32(1-6), 2013: 33(1-8), 2014: 34(1-8), 2015: 35(1-8), 2016: 36(1-8), 2017: 37(1-8), 2018: 38(1, 1, S, 2-8), 2019: 39(1-8), 2020: 40(1-8), 2021: 41(1-2, 6-8), 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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Preserved
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2026-02-09
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23 to 44
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CLOCKSS Archive
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Preserved
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2026-02-09
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26, 28 to 35
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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 (1-4); 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 (1-3, 4S); 12 (1-4); 13 (1-4); 14 (1-4); 15 (1-4); 16 (1-4); 17 (1-4); 18 (1-4); 19 (1-4); 20 (1-4); 21 (1-6); 22 (1-6); 23 (1-6); 24 (1-6); 25 (1-6); 26 (1-6); 27 (1-6); 28 (1-5); 29 (1-6); 30 (1-6); 31 (1-4, 6); 32 (1-6); 33 (1-8); 34 (1-8); 35 (1-6); 36 (1-8); 37 (1-8); 38 (1-8); 39 (1-7)
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British Library
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Preserved
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2019-09-18
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Preserved : 34 (1 to 8), 35 (1 to 8), 36 (1 to 8), 37 (1 to 8), 38 (1 to 7)
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