Compass. Kommerzielles Jahrbuch 1940: Böhmen und Mähren, Slowakei. - Seite 120 | ZEDHIA - Onlineportal für historische Wirtschaftsinformationen von 1812 bis 2003
Compass. Industrielles Jahrbuch 1935: Tschechoslowakei. - Seite 214 | ZEDHIA - Onlineportal für historische Wirtschaftsinformationen von 1812 bis 2003
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