Cheng, Thomas C. <br/><br/>
Symbiosis;  organisms living together./ 
by Thomas C. Cheng. 
 - New York,  : Pegasus  , 1970 
 - 250 p.  illus., maps. 
<br/><br/> "A Biological sciences curriculum study book." 
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Symbiosis.
<br/><br/><label>Dewey Class. No.: </label>574.55 CHE/S