The human speech sounds :
| Secondary Title | tracing the evolution of the forty-three speech sounds in the human voice through all their series, classes, kinds and forms to the limit of audible distinction, describing their organic formations, together with the positions of the mouth parts-- |
|---|---|
| Publication Date | 1918 |
| Author | Luthy, Charles T. |
| Publisher | C. T. Luthy |
| City | Peoria, Ill. |
| Page count | 134 |
| PPA Collections | |
| View on HathiTrust | nyp.33433074391446 |