Boothroyd, Jennifer <br/><br/>
Loud or soft? High or low?: a look at sound. 
Written by Jennifer Boothroyd 
 - Minneapolis, USA:   Lerner publishing group, inc.  2011 
 - 32 pages;  colour illustrations;  27 cm. 
 - Lightning bolt books. Exploring physical science .
<br/><br/>includes glossary, bibliography and index 
<br/><br/> J E 
<br/><br/><label>ISBN: </label>9780761360919 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sound- Juvenile literature<br/>Sound -waves- Juvenile literature
<br/><br/><label>Dewey Class. No.: </label>J 534 BOOT