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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 19
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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; 3 (1, 2-3, 4); 4 (, 1-2, 3, 4); 5 (, 1-2, 3, 4); 6 (, 1 to 4); 7 (, 1-4); 8 (, 1-2, 3, 4); 9 (, 1-2, 3-4); 10; 11 (1 to 4); 12 (, 1-4); 13 (, 1 to 4); 14; 15 (1, 2, 3-4); 16; 17 (1 to 4); 18; 19 (1-2, 3, 4); 20 (, 1-2, 3, 4); 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1993
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Portico
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Preserved
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2026-02-12
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Preserved : 1977/1978/1979: 1(1-4), 1981: 2(Index 1, C), 1980: 3(1-4), 1981: 4(1-4), 1982: 5(1-4), 1983: 6(1-4), 1983: 7(1-4), 1984: 8(1-4), 1984: 9(1-4), 1984: 10(C), 1985: 11(1, Index 1, 2-4), 1986: 12(1-4), 1986: 13(1, Index 1, 2-4), 1987: 14(C), 1987: 15(1, Index 1, 2-4), 1988: 16(C), 1988: 17(1, Index 1, 2-4), 1989: 18(C), 1989: 19(1-4), 1990/1993: 20(1-2, Index 1, 3-4)
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Internet Archive
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Preserved
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2025-08-08
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1 to 19
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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 (C); 3 (1, 2-3, 4); 4 (1-2, 3, 4); 5 (1-2, 3, 4); 6 (1-4); 7 (1-4); 8; 9 (3-4); 10 (C); 11 (1-4); 12 (1-4); 13 (I1, 1-4); 14 (C); 15 (1, 2, 3-4); 16 (C); 17 (1, 3, 4); 18 (C); 19 (1-2, 3, 4)
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