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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 23
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Portico
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Preserved
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2026-02-12
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Preserved : 1967/1974: 1(1, Index 1, 2-3), 1968: 2(1-12), 1969: 3(1-12, Index), 1970: 4(1-12, Index), 1971: 5(1-12), 1972: 6(1-12, Index), 1973: 7(1-12, Index), 1974: 8(1-12), 1975: 9(1-12, Index), 1976: 10(1-12, Index), 1977: 11(1-12), 1978: 12(1-12, Index), 1979: 13(1-12, Index), 1980: 14(1-12, Index), 1981: 15(1-12), 1982: 16(1-12), 1983: 17(1-12), 1984: 18(1-12), 1985: 19(1-12), 1986: 20(1-12), 1987: 21(1-12), 1988: 22(1-12), 1989: 23(1-12)
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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 3); 2 (, 1 to 12); 3 (, 1 to 12); 4 (, 1 to 12); 5 (, 1 to 12); 6 (, 1 to 12); 7 (, 1 to 12); 8 (, 1 to 12); 9 (, 1 to 12); 10 (, 1 to 12); 11 (, 1 to 12); 12 (, 1 to 12); 13 (, 1 to 12); 14 (, 1 to 12); 15 (, 1 to 12); 16 (, 1 to 12); 17 (, 1 to 12); 18 (, 1 to 12); 19 (, 1 to 12); 20 (, 1 to 12); 21 (, 1 to 12); 22 (, 1 to 12); 23 (, 1 to 12); 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989
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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 : 1-2 (I1); 1 (1-3); 2 (1-12); 3 (1, I, 2-12); 4 (1, I, 2-12); 5 (1-12); 6 (1-12); 7 (1, I, 2-12); 8 (1-12); 9 (1, I, 2-12); 10 (1, I, 2-12); 11 (1-12); 12 (1, I, 2-12); 13 (1, I, 2-12); 14 (1, I, 2-12); 15 (1-12); 16 (1-12); 17 (1-12); 18 (1-12); 19 (1-12); 20 (1-12); 21 (1-12); 22 (1-12); 23 (1-12); 64 (1)
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