| Author: | Sutro, Emil, 1832-1906 |
| Subject: | BF, Voice, Language and languages |
| Format: | Electronic text |
| Date issued: | 2015 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | Duality of Voice [electronic resource] / Emil Sutro |