Freeman, Ira M. <br/><br/>
All about sound and ultrasonic   

 - London :   W H Allen,   1967. 
<br/><br/><label>ISBN: </label>0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physical Sciences
<br/><br/><label>Dewey Class. No.: </label>534  / FRE