Source: https://www.flickr.com.Ralf Herrmann. License: All Rights Reserved.
Ein Lehrgang in Dekorationskunde ("A training course in the knowledge of decoration"). Published by Fachbuchverlag, Leipzig in 1954. Vol. II — Ein Lehrgang in die dekorative Warenbehandlung ("… decorative treatment of goods") — followed in 1956.
Source: http://www.abebooks.com.License: All Rights Reserved.