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¬Der Brockhaus Naturwissenschaft und Technik (2002)
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Duden 'Fremdwörterbuch' (1990)
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Duden : die deutsche Rechtschreibung (1996)
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Duden : die deutsche Rechtschreibung (1996)
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Drosdowski, G. (Bearb.): Duden 'Grammatik der deutschen Gegenwartssprache' (1995)
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