P Betz · Peter B · Peter Betts · Wolf-Peter Betz
Aol Verlag · City of London Phonograph & Gramophone Society
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Numerical Catalogue of Edison "Concert" Cylinders Issued, 1899-1901 | 978-0-900883-00-2 (0-900883-00-6) | 1968 | ||
| Zappen, klicken, simsen: Schritte zur Medienkompetenz | 978-3-86567-449-4 (3-86567-449-6) | 2008 | Katja Schmidt | |