Fern, Sophie, <br/><br/>
The science of sleep / 
Written by Sophie Fern. 
 - First edition. 
 - 24 pages :  illustrations ;  21 cm. 
 - CSI chapters. Level P .
 - CSI chapters.  Level P. .
<br/><br/> Includes index. 
<br/><br/> 1777 
<br/><br/><label>ISBN: </label>9781604578829 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sleep--Juvenile literature.
<br/><br/><label>Dewey Class. No.: </label>612.821