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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1-2, 3, 4); 2 (, 1 to 4); 3 (, 1 to 4); 4 (, 1 to 4); 5 (, 1 to 4); 6 (, 1-2, 3, 4); 7; 8 (1, 2-3, 4); 9 (, 1, 2, 3-4); 10 (, 1 to 4); 11 (, 1, 2, 3-4); 12 (, 1, 2, 3-4); 13 (, 1, 2, 3-4); 14 (, 1, 2, 3-4); 15 (, 1, 2, 3-4); 16; 17 (1, 2-4); 18 (, 1-2, 3-4); 19 (, 1, 2, 3-4); 20 (, 1, 2-3, 4); 21 (, 1 to 4); 22 (, 1 to 4); 23 (, 1 to 4); 24 (, 1, 2-3, 4); 25 (, 1-2, 3, 4); 26 (, 1, 2-4); 27 (, 1, 2, 3-4); 28 (, 1-2, 3, 4); 29 (, 1-3, 4); 30; 31 (1 to 4); 32 (, 1, 2, 3-4); 33 (, 1); 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 34
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Portico
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Preserved
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2026-02-12
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Preserved : 1961/1962: 1(1-4), 1963/1964/1965: 2(1-4), 1966/1967: 3(1-4), 1968/1969/1970: 4(1-4), 1970/1971/1972: 5(1-4), 1973: 6(1-4), 1973: 7(C), 1974: 8(1-4), 1975: 9(1-4), 1976: 10(1-4), 1977: 11(1-4), 1978: 12(1-4), 1979: 13(1-4), 1980: 14(1-4), 1981/1982: 15(1-4), 1982: 16(C), 1983/1984: 17(1-4), 1984: 18(1-4), 1985: 19(1-4), 1986: 20(1-4), 1987: 21(1-4), 1988: 22(1-4), 1989: 23(1-4), 1989: 24(1-4), 1990: 25(1-4), 1990: 26(1-4), 1990/1991: 27(1-4), 1991/1992: 28(1-4), 1992: 29(1-4), 1992: 30(C), 1993: 31(1-4), 1994: 32(1-4), 1994/1995: 33(1-4), 1995: 34(1-4)
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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; 2 (1-4); 3 (1-4); 4 (1-4); 5 (1, 2, 4); 6 (1-2, 3, 4); 7 (C); 8 (1, 4); 9 (1, 2); 10 (3, 4); 11 (1, 2, 3-4); 12 (1, 2, 3-4); 13 (1, 2, 3-4); 14 (1, 2, 3-4); 15 (1, 3-4); 16 (C); 17 (1, 2-4); 18 (1-2, 3-4); 19 (1, 2, 3-4); 20 (1, 2-3, 4); 21 (1-4); 22 (1-4); 23 (1-4); 24 (1, 4); 25 (1-2, 3, 4); 26 (1, 2-4); 27 (1, 2, 3-4); 28 (C, 1-2, 3, 4); 29 (1-3, 4); 30 (C); 31 (1-4); 32 (1, 2, 3-4); 33 (1, 2, 3-4); 34 (1-3, 4)
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