9 books
The Mechanism of the Human Voice (Esprios Classics)
The Mechanism of the Human Voice (Classic Reprint)
The Child's Voice
Voice, Song, and Speech
The Mechanism of the Human Voice (Illustrated Edition) (Dodo Press)
Child's Voice; Its Treatment with Regard to After Development
The Mechanism Of The Human Voice. (Illustrated Edition)
The Mechanism of the Human Voice
Behnke's Stammering, Cleft-Palate Speech, Lisping