- Author: Professor Gerhard Kostka (auth.)
- Language: German
- Year: 1982
Bilanzen
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- Author: Gerhard Kostka (auth.)
- Language: German
- Year: 1978
- Author: Heinz Lohmeyer Lothar Th. Jasper Prof. Dr. Gerhard Kostka (auth.)
- Language: German
- Year: 1993