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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 6); 2 (1 to 4, 5-6); 3 (1 to 6); 4 (1 to 6); 5 (1 to 6); 6 (1 to 6); 7 (1 to 6); 8 (1 to 6); 9 (1 to 6); 10 (1 to 6); 11 (1 to 6); 12 (1 to 6); 13 (1 to 6); 14 (1 to 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 to 6)
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CLOCKSS Archive
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Preserved
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2026-05-25
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1 to 23
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Portico
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Preserved
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2026-05-28
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Preserved : 1962/1963: 1(1-6), 1963: 2(1-6), 1964: 3(1-6), 1965: 4(1-6), 1966: 5(1-6), 1967: 6(1-6), 1968: 7(1-6), 1969: 8(1-6), 1970: 9(1-6), 1971: 10(1-6), 1972: 11(1-6), 1973: 12(1-6), 1974: 13(1-6), 1975: 14(1-6), 1976: 15(1-6), 1977: 16(1-6), 1978: 17(1-6), 1979: 18(1-6), 1980: 19(1-6), 1981: 20(1-6), 1982: 21(1-6), 1983: 22(1-6), 1984: 23(1-6)
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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 (1-6); 2 (1-4, 5-6); 3 (1-6); 4 (1-6); 5 (1-6); 6 (1-6); 7 (1-6); 8 (1-6); 9 (1-6); 10 (1-6); 11 (1-6); 12 (1-6); 13 (1-6); 14 (1-6); 15 (1-6); 16 (1-6); 17 (1-6); 18 (1-6); 19 (1-6); 20 (1-6); 21 (1-6); 22 (1-6); 23 (1-6)
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