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Portico
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Preserved
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2026-02-12
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Preserved : 1964: 1(1, Index 1, 2-4), 1965: 2(1, Index 1, 2-4), 1966: 3(1, Index 1, 2-4), 1967: 4(1, Index 1, 2-4), 1968: 5(1, Index 1, 2-6), 1969: 6(1, Index 1, 2-6), 1970: 7(1, Index 1, 2-6), 1971: 8(1, Index 1, 2-6), 1972: 9(1, Index 1, 2-6), 1973: 10(1, Index 1, 2-6), 1974: 11(1, Index 1, 2-12), 1975: 12(1, Index 1, 2-12), 1976: 13(1, Index 1, 2-12), 1977: 14(1, Index 1, 2-6), 1978: 15(1-6, Index), 1979: 16(1, Index 1, 2-6), 1980: 17(1, Index 1, 2-6), 1981: 18(1, Index 1, 2-6), 1982: 19(1, Index 1, 2-6), 1983: 20(1, Index 1, 2-6), 1984: 21(1-6), 1985: 22(1-6), 1986: 23(1-6), 1987: 24(1-6), 1988: 25(1, S 1, 2-6), 1989: 26(1, Index 1, S 1, 2-6), 1990: 27(1, S 1, 2-6), 1991: 28(1, S 1, 2-6), 1992: 29(1-6), 1993: 30(1, Index 1, 2-7), 1994: 31(1-6), 1995: 32(1-8), 1996: 33(1-8), 1997: 34(5)
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Internet Archive
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Preserved
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2025-08-08
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1 to 33
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 33
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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 6); 6 (, 1 to 6); 7 (, 1 to 6); 8 (, 1 to 4, 6); 9 (, 1 to 6); 10 (, 1 to 6); 11 (, 1 to 12); 12 (, 1 to 4, 5-6, 7 to 12); 13 (, 1 to 12); 14 (, 1 to 4, 5-6); 15 (, 1 to 6); 16 (, 1 to 6); 17 (, 1 to 6); 18 (, 1 to 6); 19 (, 1 to 6); 20 (, 1 to 6); 21 (, 1 to 6); 22 (, 1, 2, 4 to 6); 23 (, 1 to 6); 24 (, 1 to 6); 25 (, 1 to 6); 26 (, 1, 2, 3-4, 5, 6); 27 (, 1 to 6); 28 (, 1, 2-3, 4 to 6); 29 (, 1 to 6); 30 (, 1 to 7); 31 (, 1 to 6); 32 (, 1 to 8); 33 (, 1 to 8); 34 (, 1, 2, 3-4, 5 to 8); 35 (, 1 to 3, 4-5, 6 to 8); 36 (, 1 to 6); 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 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
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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, 2); 3 (I1, 1-4); 4 (1-4); 5 (1-6); 6 (I1, 1-6); 7 (1-6); 8 (1-6); 9 (I1, 1-6); 10 (I1, 1-6); 11 (1-12); 12 (I1, 1-4, 5-6, 7-12); 13 (1-12); 14 (I1, 1-4, 5-6); 15 (1-6); 16 (1-6); 17 (1-6); 18 (I1, 1-6); 19 (I1, 1-6); 20 (1-6); 21 (1-6); 22 (1-6); 23 (1-6); 24 (1-6); 25 (1-6); 26 (S1, 1, 2, 3-4, 5, 6); 27 (S1, 1-6); 28 (S1, 1, 2-3, 4-6); 29 (1-6); 30 (1-7); 31 (1-6); 32 (1, 2, 4-8); 33 (1-8); 216 (1)
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