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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 19 (1 to 4, 5-6); 20 (, 1, 2, 3-4, 5, 6); 21 (, 1, 2-3, 4 to 6); 22 (, 1-2, 3 to 6); 23 (, 1 to 4, 5-6); 24 (, 1, 2-3, 4 to 6); 25 (, 1-2, 3 to 6); 26 (, 1-2, 3 to 6); 27 (, 1, 2-3, 4 to 6); 28 (, 1, 2, 3-4, 5, 6); 29 (, 1 to 3, 4-5, 6); 30 (, 1 to 3, 4-5, 6); 31 (, 1 to 3, 4-5, 6); 32 (, 1 to 3, 4-5, 6); 33 (, 1 to 3, 4-5, 6, 7); 34 (, 1 to 6); 35 (, 1 to 3, 4-5, 6); 36 (, 1 to 3, 4-5, 6); 37 (, 1 to 6); 38 (, 1 to 6); 39 (, 1 to 6); 40 (, 1 to 6); 41 (, 1 to 6); 42 (, 1, 2, 4 to 6); 43 (, 1 to 3, 6); 44 (, 1 to 6); 45 (, 1 to 6); 46 (, 1 to 6); 47 (, 1 to 6); 48 (, 1 to 6); 49 (, 1 to 6); 50 (, 1 to 6); 51 (, 1 to 6); 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
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LOCKSS Archive
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In Progress
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2026-02-09
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 51
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Portico
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Preserved
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2026-02-12
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Preserved : 1963: 8(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 1974: 19(1-6), 1975: 20(1-6), 1976: 21(1-6), 1977: 22(1-6), 1978: 23(1-6), 1979: 24(1-6), 1980: 25(1-6), 1981: 26(1-6), 1982: 27(1-6), 1983: 28(1-6), 1984: 29(1-6), 1985: 30(1-6), 1986: 31(1-6), 1987: 32(1-6), 1988: 33(1-7), 1989: 34(1, S 1, 2, S 2, 3-6), 1990: 35(1-6), 1991: 36(1, S 1, 2-6), 1992: 37(1-6), 1993: 38(1, S 1, 2-3, S 3, 4-6), 1994: 39(1, S 1, 2-6), 1995: 40(1-6), 1996: 41(1, S 1, 2-6), 1997: 42(1, S 1, 2-6), 1998: 43(1, S 1, 2-6), 1999: 44(1-6), 2000: 45(1-6), 2001: 46(1-6), 2002: 47(1-6), 2003: 48(1, S 1, 2-6), 2004: 49(1-6), 2005: 50(1, S 1, 2-6), 2006: 51(1-6)
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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 : 42 (3); 45 (1, 4); 47 (5, 6); 48 (1-6); 49 (1-6); 50 (1-6); 51 (1-6)
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