The invertebrate world / 
Robert Barth H., Robert E. Broshears . 
 - Orlando ;  Saunders college Publishing ,  1982. 
 - ix,646 p,:  ill,; 
<br/><br/><label>ISBN: </label>0030132762 
<br/><br/><label>LC Class. No.: </label>QL362   / .B37