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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (2 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 4); 12 (1 to 6); 13 (1 to 6); 14 (1 to 6); 15 (1 to 6); 16 (1 to 6); 17 (1 to 6); 18 (1 to 6); 19 (1 to 4); 20 (1 to 6); 21 (1 to 6); 22 (1 to 6); 24 (1 to 6); 25 (1 to 6); 26 (S1, 1 to 6); 27 (1 to 6); 28 (1 to 6); 29 (1 to 6); 30 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 40 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 50 (1 to 6); 51 (1)
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Internet Archive
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Preserved
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2025-08-08
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1 to 25
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.22:1-6;vol.23:1-6;vol.24:1-6;vol.25:1-6;vol.26:1-6,S1;vol.27:1-6;vol.28:1-6;vol.29:1-6;vol.30:1-6;vol.31:1-6;vol.32:1-6;vol.33:1-6;vol.34:1-6;vol.35:1-6;vol.36:1-6;vol.37:1-6;vol.38:1-6;vol.39:1-6;vol.40:1-6;vol.41:1-6;vol.42:1-6;vol.43:1-6;vol.44:1-6;vol.45:1-6;vol.46:1
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CLOCKSS Archive
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Preserved
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2026-04-06
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1 to 4, 6, 16 to 51
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Portico
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Preserved
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2026-04-02
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Preserved : 1976: 1(1-4), 1977: 2(1-4), 1978: 3(1-4), 1979: 4(1-4), 1980: 5(1-4), 1981: 6(1-4), 1982: 7(1-4), 1983: 8(1-4), 1984: 9(1-4), 1985: 10(1-4), 1986: 11(1-4), 1987: 12(1-6), 1988: 13(1-6), 1989: 14(1-6), 1990: 15(1-6), 1991: 16(1-6), 1992: 17(1-6), 1993: 18(1-6), 1994: 19(1-6), 1995: 20(1-6), 1996: 21(1-6), 1997: 22(1-6), 1998: 23(1-6), 1999: 24(1-6), 2000: 25(1-6), 2001: 26(1, S 1, 2-6), 2002: 27(1-6), 2003: 28(1-6), 2004: 29(1-6), 2005: 30(1-6), 2006: 31(1-6), 2007: 32(1-6), 2008: 33(1-6), 2009: 34(1-6), 2010: 35(1-6), 2011: 36(1-6), 2012: 37(1-6), 2013: 38(1-6), 2014: 39(1-6), 2015: 40(1-6), 2016: 41(1-6), 2017: 42(1-6), 2018: 43(1-6), 2019: 44(1-6), 2020: 45(1-6), 2021: 46(1-6), 2022: 47(1-6), 2023: 48(1-6), 2024: 49(1-6), 2025: 50(1-6), 2026: 51(1-2)
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