| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Wristwatches: History Of A Century's Development | 978-0-7643-2137-5 (0-7643-2137-4) | 2004 | Helmut Kahlert · Gisbert L. Brunner |
| Wristwatches: History of a Century's Development | 978-0-7643-0861-1 (0-7643-0861-0) | 1999 | Helmut Kahlert |
Richard M. · Richard May · Richard Mayhue · Richard Mayo · Richard Mayou · Richard Moe · Richard Mühe · Richard Muh