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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 3); 2 (1 to 3); 3 (1 to 3); 4 (1 to 3); 5 (1 to 3); 6 (1 to 3); 7 (1 to 3); 8 (1 to 3); 9 (1 to 4); 10 (1 to 3); 11 (1 to 3); 12 (1 to 3); 13 (1 to 3); 14 (1 to 3); 15 (1 to 3); 16 (1 to 3); 17 (1 to 3); 18 (1 to 3); 19 (1 to 3); 20 (1 to 3); 21 (1 to 3); 22 (1 to 3); 23 (1 to 3); 24 (1 to 3); 25 (1 to 3); 26 (1 to 3); 27 (1 to 3); 28 (1 to 3); 29 (1 to 3); 30 (1 to 3); 31 (1 to 3); 32 (1 to 3); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 50 (1 to 4); 51 (s1, 1 to 4); 52 (s1, 1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 60 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1, 2)
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Internet Archive
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Preserved
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2025-08-08
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1 to 53
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.36:1-4;vol.37:1-4;vol.38:1-4;vol.39:1-4;vol.40:1-4;vol.41:1-4;vol.42:1-4;vol.43:1-4;vol.44:1-4;vol.45:1-4;vol.46:1-4;vol.47:1-4;vol.48:1-4;vol.49:1-4;vol.50:1-4;vol.51:1-4,sup.s1;vol.52:1-4,sup.s1;vol.53:1-4;vol.54:1-4;vol.55:1-4;vol.56:1-4;vol.57:1-4;vol.58:1-4;vol.59:1-3
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Portico
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Preserved
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2026-04-09
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Preserved : 1961/1962: 1(1-3), 1962/1963: 2(1-3), 1963/1964: 3(1-3), 1964/1965: 4(1-3), 1965/1966: 5(1-3), 1966/1967: 6(1-3), 1967/1968: 7(1-3), 1968/1969: 8(1-3), 1969/1970: 9(1-4), 1971: 10(1-3), 1972: 11(1-3), 1973: 12(1-3), 1974: 13(1-3), 1975: 14(1-3), 1976: 15(1-3), 1977: 16(1-3), 1978: 17(1-3), 1979: 18(1-3), 1980: 19(1-3), 1981: 20(1-3), 1982: 21(1-3), 1983: 22(1-3), 1984: 23(1-3), 1985: 24(1-3), 1986: 25(1-3), 1987: 26(1-3), 1988: 27(1-3), 1989: 28(1-3), 1990: 29(1-3), 1991: 30(1-3), 1992: 31(1-3), 1993: 32(1-3), 1994: 33(1-4), 1995: 34(1-4), 1996: 35(1-4), 1997: 36(1-4), 1998: 37(1-4), 1999: 38(1-4), 2000: 39(1-4), 2001: 40(1-4), 2002: 41(1-4), 2003: 42(1-4), 2004: 43(1-4), 2005: 44(1-4), 2006: 45(1-4), 2007: 46(1-4), 2008: 47(1-4), 2009: 48(1-4), 2010: 49(1-4), 2011: 50(1-4), 2012: 51(1-4), 2013: 52(1-4), 2014: 53(1-4), 2015: 54(1-4), 2016: 55(1-4), 2017: 56(1-4), 2018: 57(1-4), 2019: 58(1-4), 2020: 59(1-4), 2021: 60(1-4), 2022: 61(1-4), 2023: 62(1-4), 2024: 63(1-4), 2025: 64(1-4), 2026: 65(1-2)
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CLOCKSS Archive
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Preserved
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2026-04-06
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30 to 65
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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 : 45 (1-4); 46 (1-4)
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