Hyman, Libbie Henrietta <br/><br/>
The Invertebrates:  Platyhelminthes and Rhynchocoela the acoelomate Bilateria (vol-II) 
/ by Libbie Henrietta Hyman 
 - new york:  McGraw-Hill Book Comapany,  1951. 
 - 572p. 
<br/><br/><label>Dewey Class. No.: </label>595.12  / HYM/T