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Are you Detlef Koch, author of the books below?
Der Fremde aus Spanien by Detlef Koch REIT-Gesetz by Detlef Koch Freda by Detlef Koch Gewinnspiele im Steuerrecht by Detlef Koch Produkthaftung by Detlef Koch Im Rampenlicht by Detlef Koch GmbH-Recht by Harald Bartl


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