Luthy, Charles T The Human Speech Sounds, Tracing the Evolution of the Forty-three Speech Sounds in the Human Voice Through All Their Series, Classes, Kinds and Forms ... Formations; Together With the Positions...

Luthy, Charles T The Human Speech Sounds, Tracing the Evolution of the Forty-three Speech Sounds in the Human Voice Through All Their Series, Classes, Kinds and Forms ... Formations; Together With the Positions...

Luthy, Charles T. Luthy's Scientific Handwriting: Being an Analysis of Roman Script Form and Execution

Luthy, Peter M. One-Dimensional Dyadic Wavelets