Simon, Seymour. <br/><br/>
Discovering what earthworms do / 
Illustrated by Jean Zallinger. 
 - New York :  McGraw,  1969. 
 - 47 p. :  ill. 
<br/><br/> Characteristics and habits of earthworms.  Includes directions for experiments to learn about their behavior. 
<br/><br/><label>LCCN: </label>69017191  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Worms.
<br/><br/><label>Dewey Class. No.: </label>595