Friedrichs, Kurt Otto,  1901- <br/><br/>
The theory of wave propagation/ 
by K. O. Friedrichs. 
 - New York:  New York University/Institute of Mathematical Sciences,  1953. 
 - 174 leaves:  ill.;  29 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wave-motion, Theory of<br/>Wave mechanics
<br/><br/><label>Dewey Class. No.: </label>531.33   / F911t