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Portico
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Preserved
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2026-04-16
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Preserved : 1964: 1(1-4, Index), 1965: 2(1-4, Index), 1966: 3(1-6, Index), 1967: 4(1-6, Index), 1968: 5(1-6, Index), 1969: 6(1-6, Index), 1970: 7(1-12, Index), 1971: 8(1-12, Index), 1972: 9(1-12, Index), 1973: 10(1-12, Index), 1974: 11(1-12, Index), 1975: 12(1-12, Index), 1976: 13(1-12, Index), 1977: 14(1-12, Index), 1978: 15(1, Index 1, 2-12)
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (1 to 4); 2 (Index, 1 to 4); 3 (Index, 1 to 6); 4 (Index, 1 to 6); 5 (Index, 1 to 6); 6 (Index, 1 to 6); 7 (Index, 1 to 12); 8 (Index, 1 to 12); 9 (Index, 1 to 12); 10 (Index, 1 to 12); 11 (Index, 1 to 12); 12 (Index, 1 to 5, 6-7, 8 to 12); 13 (Index, 1 to 12); 14 (Index, 1 to 8, 9-10, 11-12); 15 (Index, 1 to 9, 10-11, 12)
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CLOCKSS Archive
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Preserved
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2026-04-13
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1 to 15
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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, I, 2-4); 2 (1, I, 2-4); 3 (1, I, 2-6); 4 (1, I, 2-6); 5 (1, I, 2-6); 6 (1, I, 2-6); 7 (1, I, 2-12); 8 (1-12); 9 (1-12); 10 (1, I, 2-12); 11 (1-12); 12 (1, I, 2-5, 6-7, 8-12); 13 (1, I, 2-12); 14 (1, I, 2-8, 9-10, 11-12); 15 (I1, 1-9, 10-11, 12)
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