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Portico
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Preserved
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2026-02-12
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Preserved : 1981: 1(C), 1981: 2(C), 1982: 3(C), 1983: 4(C), 1984: 5(1-4), 1984: 6(1-4), 1985: 7(1-4), 1985: 8(1-4), 1986: 9(1-4), 1986: 10(1-4), 1987: 11(1-4), 1987: 12(1-4), 1988: 13(1-4), 1988: 14(1-4), 1988: 15(1-4), 1989: 16(1-4), 1989: 17(1-4), 1989: 18(1-4), 1989: 19(1-4), 1989: 20(1-3)
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1; 2; 3; 4; 5 (1 to 4); 6 (, 1 to 4); 7 (, 1 to 4); 8 (, 1 to 4); 9 (, 1 to 4); 10 (, 1-2, 3-4); 11 (, 1 to 4); 12 (, 1 to 4); 13 (, 1 to 4); 14 (, 1 to 4); 15 (, 1 to 4); 16 (, 1-2, 3, 4); 17 (, 1-2, 3-4); 18 (, 1, 2, 3-4); 19 (, 1 to 4); 20 (, 1-2, 3); 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 20
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Internet Archive
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Preserved
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2025-08-08
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1 to 20
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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 (C); 2; 3; 4; 5 (1-4); 6 (1-4); 7 (1-4); 8 (1-4); 9 (1-4); 10 (1-2, 3-4); 11 (1-4); 12 (1-4); 13 (1-4); 14 (1-4); 15 (1-4); 16 (1-2, 3, 4); 17 (1-2, 3-4); 18 (1, 2, 3-4); 19 (1-4); 20 (1-2, 3)
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