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Portico
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Preserved
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2026-04-16
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Preserved : 1951: 54(C), 1952: 55(C), 1953: 56(C), 1954: 57(C), 1955: 58(C), 1956: 59(C), 1957: 60(C), 1958: 61(C), 1959: 62(C), 1960: 63(C), 1961: 64(C), 1962: 65(C), 1963: 66(C), 1964: 67(C), 1965: 68(C), 1966: 69(C), 1967: 70(C), 1968: 71(C), 1969: 72(1-4), 1970: 73(C), 1971: 74(C), 1972: 75(1-5), 1973: 76(1-5, Index), 1974: 77(1-5, Index), 1975: 78(1-5, Index), 1976: 79(1-5, Index), 1977: 80(1-5, Index), 1978: 81(1-4, Index), 1979: 82(1-4, Index), 1980: 83(1-4, Index), 1981: 84(1-4, Index), 1982: 85(1-4, Index), 1983: 86(1-4), 1984: 87(1-4), 1985: 88(1-4, Index), 1986: 89(1-4), 1987: 90(1-4), 1988: 91(1-4), 1989: 92(1-4)
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 54 (Complete); 55; 56; 57; 58; 59; 60; 61; 62; 63; 64; 65; 66; 67; 68; 69; 70; 71; 72 (1 to 4); 74 (Complete); 75 (1 to 5); 76 (Index, 1 to 5); 77 (Index, 1 to 5); 78 (Index, 1 to 5); 79 (Index, 1 to 5); 80 (Index, 1 to 5); 81 (Index, 2 to 4); 82 (Index, 2 to 4); 83 (Index, 1 to 4); 84 (Index, 1 to 4); 85 (Index, 1 to 4); 86 (1 to 4); 87 (1 to 4); 88 (Index, 1 to 4); 89 (1 to 4); 90 (1 to 4); 91 (1 to 4); 92 (2 to 4)
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CLOCKSS Archive
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Preserved
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2026-04-13
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54 to 92
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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 : 54; 55; 56; 57; 58; 59; 60; 61; 62; 63; 64; 65; 66; 67; 68; 69; 70; 71; 72 (1, 3, 4); 73 (C); 74; 75 (1-5); 76 (1, I, 2-5); 77 (1-5); 78 (1, I, 2-5); 79 (1, I, 2-5); 80 (1, I, 2-5); 81 (1, I, 2-4); 82 (1, I, 2-4); 83 (1-4); 84 (1-4); 85 (1, I, 2-4); 86 (1-4); 87 (1-4); 88 (1, I, 2-4); 89 (1-4); 90 (1-4); 91 (1-4); 92 (1-4)
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