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

 - New York:  Random House,  1961. 
 - 141p.:  ill.;  24cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sound<br/>Juvenile literature
<br/><br/><label>LC Class. No.: </label>QC225.5.F7