Hyman, Libble Henriet <br/><br/>
Invertebrates : platyhelminthes and the acoelomate bilateria / 
Libble Henriet Hyman 
 - New York :  McGrow-Hill Book Company ,  1951. 
 - vii, 550p.  23.5 cm. 
<br/><br/><label>ISBN: </label>070-31661-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Platyhelminthes and the acoelomate bilateria