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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, 2-3, 4); 7 (, 1, 2-3, 4); 8 (, 1-2, 3, 4); 9 (, 1, 2-3, 4); 10 (, 1, 2-3, 4); 11 (, 1 to 4); 12 (, 1, 2-3, 4); 13 (, 1, 2, 3-4); 14 (, 1 to 4); 15 (, 1, 2-3, 4); 16 (, 1, 2-3, 4); 17 (, 1, 2-3, 4); 18 (, 1 to 4); 19 (, 1 to 4); 20 (, 1-2, 3); 21 (, 1 to 4); 22 (, 1-2, 3, 4); 23 (, 1-2, 3, 4); 24 (, 1 to 4); 25 (, 1, 2, 3-4); 26 (, 1-2, 3, 4); 27 (, 1 to 4); 28 (, 1 to 4); 29 (, 1 to 4); 30 (, 1 to 3); 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
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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(3-4), 1980/1981: 3(1-4), 1981/1982: 4(1-4), 1982: 5(1), 1983: 6(1-4), 1984: 7(1-3), 1985: 8(1, 3-4), 1986: 9(1-3)
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 28
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LOCKSS Archive
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Preserved
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2026-02-09
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1 to 17, 19 to 28
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Portico
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Preserved
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2026-02-12
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Preserved : 1988: 10(4), 1989: 11(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1990: 12(1-3), 1991: 13(1-2), 1992: 14(1-2), 1993: 15(2)
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Portico
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Preserved
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2026-02-12
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Preserved : 1994: 15(4), 1994: 16(1-3), 1995: 17(2-3), 1996/1997: 18(1-4), 1997/1998: 19(1-4), 1998: 20(1-4), 1999/2000: 21(1-4), 2000: 22(1-4), 2001: 23(1-4), 2002/2003: 24(1-4), 2003/2004: 25(1, S 1, 2-4), 2004/2005: 26(1-4), 2005/2006: 27(1-4), 2006: 28(1-4)
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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 (4); 22 (1-2, 3, 4); 23 (1-2, 3, 4); 24 (1-4); 25 (1, 2, 3-4); 26 (1-2, 3, 4); 27 (1-4); 28 (1-4)
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