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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 20 (1, 2); 21 (1, 2); 22 (1, 2); 23 (1, 2); 24 (1, 2); 25 (1, 2); 26 (1, 2); 27 (1, 2); 28 (1 to 3); 29 (1 to 3); 30 (1 to 3); 31 (1 to 4); 32 (1 to 4); 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)
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Portico
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Preserved
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2026-04-09
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Preserved : 1978: 1(1-3), 1972: A1(1)
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Portico
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Preserved
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2026-04-09
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Preserved : 1979: 2(1-3), 1972: A2(2)
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Portico
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Preserved
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2026-04-09
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Preserved : 1980: 3(1-3), 1973: A3(3), 1973: A4(4), 1981: 4(1-2), 1982: 5(1-2), 1974: A5(5), 1983: 6(1-2), 1974: A6(6), 1975: A7(7), 1984: 7(1-2), 1976: A8(8), 1985: 8(1-2), 1976: A9(9), 1986: 9(1-2), 1987: 10(1-2), 1976: A10(10), 1977: A11(11), 1988: 11(1-2), 1977: A12(12), 1989: 12(1-2), 1977: A13(13), 1990: 13(1-2), 1991: 14(1-2), 1992: 15(1-2), 1993: 16(1-2), 1994: 17(1-2), 1995: 18(1-2), 1996: 19(1-2), 1997: 20(1-2), 1998: 21(1-2), 1999: 22(1-2), 2000: 23(1-2), 2001: 24(1-2), 2002: 25(1-2), 2003: 26(1-2), 2004: 27(1-2), 2005: 28(1-3), 2006: 29(1-3), 2007: 30(1-3), 2008: 31(1-4), 2009: 32(1-4), 2010: 33(1-4), 2011: 34(1-4), 2012: 35(1-4), 2013: 36(1-4), 2014: 37(1-4), 2015: 38(1-4), 2016: 39(1-4), 2017: 40(1-4), 2018: 41(1-4), 2019: 42(1-4), 2020: 43(1-4), 2021: 44(1-4), 2022: 45(1-4), 2023: 46(1-4), 2024: 47(1-4), 2025: 48(1-4), 2026: 49(1)
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CLOCKSS Archive
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Preserved
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2026-04-06
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14 to 49
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.20:1-2;vol.21:1-2;vol.22:1-2;vol.23:1-2;vol.24:1-2;vol.25:1-2;vol.26:1-2;vol.27:1-2;vol.28:1-3;vol.29:1-3;vol.30:1-3;vol.31:1-4;vol.32:1-4;vol.33:1-4;vol.34:1-4;vol.35:1-4;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
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