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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 6); 2 (, 1 to 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 4, 5-6); 13 (, 1 to 4, 5-6); 14 (, 1 to 4, 5-6); 15 (, 1 to 4, 5-6); 16 (, 1 to 4, 5-6); 17 (, 1-2, 3, 4, 5-6); 18 (, 1-2, 3, 4, 5-6); 19 (, 1 to 6); 20 (, 1 to 6); 21 (, 2 to 6); 22 (, 1 to 6); 23 (, 1 to 4, 5-6); 24 (, 1 to 4, 5-6); 25 (, 1 to 6); 26 (, 1 to 6); 27 (, 1 to 4, 5-6); 28 (, 1 to 6); 29 (, 1 to 6); 30 (, 1 to 6); 31 (, 1 to 5); 32 (, 1 to 12); 33 (, 1 to 8); 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; 1995; 1996; 1997; 1998; 1999; 2000; 2001
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.32:1-3;vol.33:1-6
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CLOCKSS Archive
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Preserved
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2026-02-09
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32, 33
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Portico
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Preserved
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2026-02-12
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Preserved : 1969: 1(1-3), 1970: 2(1-2), 1971: 3(2, 4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1974: 6(4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1976: 8(6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1979: 11(2-6), 1980: 12(1-6), 1981: 13(1-6)
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Portico
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Preserved
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2026-02-12
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Preserved : 1983: 15(1-6), 1984: 16(1-4), 1985: 17(1-6), 1986: 18(5-6), 1987: 19(1, 3-6), 1988: 20(1, 3-6), 1989: 21(2-4, 6), 1990: 22(4), 1991: 23(4)
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Portico
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Preserved
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2026-02-12
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Preserved : 1993: 25(2-3), 1994: 26(1, 3-5), 1995: 27(1, 5-6), 1996: 28(1, 4-6), 1997: 29(1-6), 1998: 30(1, 3-6), 1999: 31(2-3, 5), 2000: 32(1-2, S 2, 3-12_suppl), 2001: 33(1-2, S 2, 3-8_suppl)
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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 : 29 (1-4, 6); 30 (1, 3, 5); 31 (3)
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