Barrington, E.J.W. <br/><br/>
The Biology of Hemichordata and Protochordata 

 - London  Oliver and Boyd  1965 
 - 176 
<br/><br/><label>Publisher. No.: </label> International 
<br/><br/><label>Subjects--Personal Names: </label> Zoology 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoology