Hegner, Robert W <br/><br/>
Invertebrate zoology 

 - 2d ed 
 - London  Macmillan  1968 
 - xviii,619 p.  Illustration 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ZOOLOGY
<br/><br/><label>Dewey Class. No.: </label>592  / HEG