General Zoology / 
Tracy I. Storer ...[et al.] 
 - 6th ed. 
 - New Delhi:  McGraw-Hill,  ©1979 
 - 902p.:  ill., maps;  25 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Invertebrates
<br/><br/><label>Dewey Class. No.: </label>591