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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); 2 (2); 3 (1, 2); 4 (1, 2); 5 (1, 2); 6 (1, 2); 7 (1, 2); 8 (1, 2); 9 (1, 2); 10 (1, 2); 11 (1, 2); 12 (1, 2); 13 (1, 2); 14 (1, 2); 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, 2‐3); 23 (1 to 3); 24 (1 to 3); 25 (1 to 3); 26 (1 to 3); 27 (1 to 3); 28 (1, 2‐3); 29 (1 to 3); 30 (1, 2‐3); 31 (1 to 3); 32 (1, 2‐3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1 to 3); 39 (1 to 3); 40 (1 to 3); 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 (1 to 4); 52 (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 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1 to 4); 70 (1)
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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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;vol.52:1-4;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.59:1-4;vol.60:1-4;vol.61:1-4;vol.62:1-4;vol.63:1-4;vol.64:1-4
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CLOCKSS Archive
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Preserved
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2026-04-27
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1 to 70
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Portico
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Preserved
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2026-04-30
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Preserved : 1957: 1(1), 1958: 2(1-2), 1959: 3(1-2), 1960: 4(1-2), 1961: 5(1-2), 1962: 6(1-2), 1963: 7(1-2), 1964: 8(1-2), 1965: 9(1-2), 1966: 10(1-2), 1967: 11(1-2), 1968: 12(1-2), 1969: 13(1-2), 1970: 14(1-2), 1971: 15(1-3), 1972: 16(1-3), 1973: 17(1-3), 1974: 18(1-3), 1975: 19(1-3), 1976: 20(1-3), 1977: 21(1-3), 1978: 22(1-3), 1979: 23(1-3), 1980: 24(1-3), 1981: 25(1-3), 1982: 26(1-3), 1983: 27(1-3), 1984: 28(1-3), 1985: 29(1-3), 1986: 30(1-3), 1987: 31(1-3), 1988: 32(1-3), 1989: 33(1-3), 1990: 34(1-3), 1991: 35(1-3), 1992: 36(1-3), 1993: 37(1-3), 1994/1995: 38(1-3), 1995: 39(1-3), 1996: 40(1-3), 1997: 41(1-4), 1998: 42(1-4), 1999: 43(1-4), 2000: 44(1-4), 2001: 45(1-4), 2002: 46(1-4), 2003: 47(1-4), 2004: 48(1-4), 2005: 49(1-4), 2006: 50(1-4), 2007: 51(1-4), 2008: 52(1-4), 2009: 53(1-4), 2010: 54(1-4), 2011: 55(1-4), 2012: 56(1-4), 2013: 57(1-4), 2014: 58(1-4), 2015: 59(1-4), 2016: 60(1-4), 2017: 61(1-4), 2018: 62(1-4), 2019: 63(1-4), 2020: 64(1-4), 2021: 65(1-4), 2022: 66(1-4), 2023: 67(1-4), 2024: 68(1-4), 2025: 69(1-4), 2026: 70(1)
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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 : 50 (1-4); 51 (1-4)
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