Allyn and Bacon · Ergassia Limited
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Ergassia Relaxation CD | 978-0-9548847-0-3 (0-9548847-0-1) | 2004 | Susan Szasz |
| Harmonic Materials in Tonal Music: A Programmed Course: Part 1 | 978-0-205-27163-4 (0-205-27163-4) | 1998 | Greg A. Steinke · Paul O. Harder |
| Music Manuscript Techniques: A Programmed Approach | 978-0-205-07993-3 (0-205-07993-8) | 1983 | |
Dr Paul O Harder · P. H. · Paul Harather · Paul Herder · Paul O. Harder · Paul O. Harder Greg A. Steinke