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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 23 (1 to 5, 7, 8, 10 to 12); 24 (3 to 7, 10); 25 (2 to 4, 6 to 9, 11, 12); 26 (1 to 5, 7 to 11); 27 (2 to 7, 10 to 12); 28 (1 to 3, 6 to 9, 11); 29 (4 to 6, 8 to 12); 30 (3 to 5, 9 to 12); 31 (2, 4, 8, 10 to 12); 32 (1, 3, 6 to 12); 33 (1, 4, 5, 7 to 9); 34 (1 to 3, 5, 6, 9 to 11); 35 (1, 2, 4, 6 to 8, 10); 36 (1 to 9, 11); 37 (1, 2, 4 to 12); 38 (2, 3, 6, 9, 10); 39 (1, 6, 10, 12); 40 (1 to 3, 6, 9 to 11); 41 (1 to 5, 8, 10 to 12); 42 (4, 6, 8, 10, 11); 43 (2 to 5, 10 to 12); 44 (2, 3, 6 to 8, 10 to 12); 45 (1, 6, 8 to 11); 46 (3, 4, 6 to 8, 10, 11); 47 (1, 3, 6, 8, 9); 48 (2, 3, 5 to 8); 49 (1, 2, 4 to 7, 9, 10); 50 (1, 8 to 10); 51 (2 to 5)
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.23:1-12;vol.24:1-12;vol.25:1-12;vol.26:1-12;vol.27:1-12;vol.28:1-12;vol.29:1-12;vol.30:1-12;vol.31:1-12;vol.32:1-12;vol.33:1-12;vol.34:1-12;vol.35:1-12;vol.36:1-12;vol.37:1-12;vol.38:1-12;vol.39:1-12;vol.40:1-12;vol.41:1-12;vol.42:1-12;vol.43:1-12;vol.44:1-12;vol.45:1-12;vol.46:1-12
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CLOCKSS Archive
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Preserved
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2026-04-13
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1 to 52
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Portico
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Preserved
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2026-04-23
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Preserved : 1975: 1(1-12), 1976: 2(1-12), 1977: 3(1-12), 1978: 4(1-12), 1979: 5(1-12), 1980: 6(1-12), 1981: 7(1-12), 1982: 8(1-12), 1983: 9(1-12), 1984: 10(1-12), 1985: 11(1-12), 1986: 12(1-12), 1987: 13(1-12), 1988: 14(1-12), 1989: 15(1-12), 1990: 16(1-12), 1991: 17(1-12), 1992: 18(1-12), 1993: 19(1-12), 1994: 20(1-12), 1995: 21(1-12), 1996: 22(1-12), 1997: 23(1-12), 1998: 24(1-12), 1999: 25(1-12), 2000: 26(1-12), 2001: 27(1-12), 2002: 28(1-12), 2003: 29(1-12), 2004: 30(1-12), 2005: 31(1-12), 2006: 32(1-12), 2007: 33(1-12), 2008: 34(1-12), 2009: 35(1-12), 2010: 36(1-12), 2011: 37(1-12), 2012: 38(1-12), 2013: 39(1-12), 2014: 40(1-12), 2015: 41(1-12), 2016: 42(1-12), 2017: 43(1-12), 2018: 44(1-12), 2019: 45(1-12), 2020: 46(1-12), 2021: 47(1-10), 2022: 48(1-10), 2023: 49(1-10), 2024: 50(1-10), 2025: 51(1-10), 2026: 52(1-2)
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