Op. 9: Fifty Lessons For Medium Voice
| Publisher Series | Schirmer's Library of Musical Classics |
| Publisher | G. Schirmer, Inc. |
| Distributed by/Director of Distribution | Hal Leonard Corporation |
| Preface by | Alberto Randegger |
| Format | Paperback |
| Language | English |
| Pages / Font | 87 pages |
| ISBN 10 | 0-7935-5344-x |
| Barcode | 0 73999 53720 8 |
| Other | HL50253720 |
| Volume Number | 242 |
| Price | U.S. $9.95 |
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