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Published: Düsseldorf : Fachhochsch. Düsseldorf, 1988
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Published: Berlin ; Frankfurt a.M. : Verlag Franz Vahlen, 1957
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Published: Berlin ; Frankfurt a.M. : Verlag Franz Vahlen, 1957.
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Published: Köln : Pahl-Rugenstein, 1980
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Published: Tübingen : Ed. diskord, 1993
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