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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 26 (1 to 6); 27 (, 1 to 6); 28 (, 1 to 6); 29 (, 1 to 6); 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 6); 37 (, 1 to 6); 38 (, 1 to 6); 39 (, 1 to 6); 40 (, 1 to 6); 41 (, 1 to 6); 42 (, 1 to 6); 43 (, 1 to 6); 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 36, 38, 39
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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 31
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Portico
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Preserved
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2026-02-12
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Preserved : 1974: 1(1-2), 1975: 2(1-2), 1976: 3(1-2), 1977: 4(1-2), 1978: 5(1-2), 1979: 6(1-4), 1980: 7(1-4), 1981: 8(1-4), 1982: 9(1-4), 1983: 10(1-4), 1984: 11(1-4), 1985: 12(1-4), 1986: 13(1-4), 1987: 14(1-4), 1988: 15(1-4), 1989: 16(1-4), 1990: 17(1-4), 1991: 18(1-4), 1992: 19(1-6), 1993: 20(1-6), 1994: 21(1-7), 1995: 22(1-6), 1996: 23(1-6), 1997: 24(1-6), 1998: 25(1-6), 1999: 26(1-6), 2000: 27(1-6), 2001: 28(1-6), 2002: 29(1-6), 2003: 30(1-6), 2004: 31(1-6), 2005: 32(1-6), 2006: 33(1-6), 2007: 34(1-6), 2008: 35(1-6), 2009: 36(1-6), 2010: 37(1-6), 2011: 38(1-6), 2012: 39(1-6), 2013: 40(1-6), 2014: 41(1-6), 2015: 42(1-6), 2016: 43(1-6)
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CLOCKSS Archive
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Preserved
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2026-02-09
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32, 34 to 43
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LOCKSS Archive
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Preserved
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2026-02-09
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32 to 43
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CLOCKSS Archive
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In Progress
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2026-02-09
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33
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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 : 2; 3 (2); 4; 5 (1); 6 (2-4); 7; 8 (1, 3, 4); 9 (1); 10 (2, 3); 11 (1-4); 12 (3, 4); 13 (1-3); 14 (2, 4); 15 (1, 2, 4); 16 (3, 4); 17 (2, 4); 18 (1, 2, 4); 19 (1, 3, 4, 6); 20 (1, 3, 4); 21 (1, 3); 22 (2, 5, 6); 23 (3-6); 24 (1-6); 25 (1-6); 26 (1-6); 27 (1-6); 28 (1-6); 29 (1-6); 30 (1-6); 31 (1-6); 32 (1-6); 33 (1-6); 34 (1, 5, 6); 35 (5); 36 (1-4); 37 (1-6); 38 (1-6); 39 (1-6); 40 (1-6); 41 (1-6); 42 (1-6); 43 (1-6)
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