Aruego, Jose. <br/><br/>
Symbiosis: a book of unusual friendships. 

 - New York :  Scribner,  1970. 
 - 40 p. :  ill. 
<br/><br/> Describes the mutual exchanges between completely different kinds of animals in nine cases of symbiosis. 
<br/><br/><label>LCCN: </label>77106529  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animal behavior.<br/>Symbiosis.
<br/><br/><label>Dewey Class. No.: </label>591.52