Morgan, Sally,  1951- <br/><br/>
Using sound / 
Sally Morgan and Adrian Morgan 
 - New York :  Facts on File,  1994 
 - 48 p. :  ill. ;  30 cm. 
 - Designs in science .
<br/><br/><label>ISBN: </label>0816029814  RM40.20 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sound--Juvenile literature<br/>Sound--waves--Juvenile literature