Collection of Voice-training Exercises
- Cover Design: Anna Sędziwy
 - Preface by: Henryk Górski
 - Introduction by: Henryk Górski
 
- Language of edition: pol
 - Number of pages: 64
 - Cover: softcover
 - No. of edition: 5
 - Published: 2021
 - Type: books
 - Size: A4 vertical (210x297 mm)
 
                                                
                                                                                Out of Print