| Author: | Du Moncel, Th., comte, 1821-1884 |
| Subject: | TK, Telephone, Phonograph, Microphone |
| Format: | Text |
| Date issued: | 2008 |
| Language: | French |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | Le Téléphone, le Microphone et le Phonographe [electronic resource] / Th., comte Du Moncel |