Reuben, Gabriel H. <br/><br/>
What is sound / 
Gabriel H. Reuben ; pictures-George Boer. 
 - Chicago :  Benefic Press,  c 1960. 
 - 46 p. :  ill. ;  20 cm. 
 - The What is it series. .
<br/><br/>300   300  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sound--Study and teaching (Elementary).
<br/><br/><label>Dewey Class. No.: </label>534 / R317w