Fry, W. G. <br/><br/>
Biology of the porifera  : symposia of the zoological society of london 25 

 - New York   Academic press  1970 
<br/><br/><label>Subjects--Index Terms: </label>Parazoa  Zoology  Birds  Protozoa  Parazoa  
<br/><br/><label>Dewey Class. No.: </label>593.4