Vokaltraining im Dialog. Composed by Martina Freytag. Paperback. Book, CD. 124 pages. Gustav Bosse Verlag #BE02808_00. Published by Gustav Bosse Verlag (BA.BE02808).
ISBN 9783764928087. 29.8 x 21 cm inches. Language: German. Preface: Freytag, Martina.
