The biology of the porifera / 
edited by W. G. Fry. 
 - [London]  Published for the Zoological Society of London by Academic Press  1970 
 - xxviii, 512 p.  illus. (1 col.), maps  24 cm. 
 - Symposia of the Zoological Society of London, no. 25 .
 - Zoological Society of London  Symposia  no. 25 .
<br/><br/> English, French or German  "The proceedings of a symposium held at the Zoological Society of London on 10 and 11 September, 1968, with additional articles presented during colloquia held at the British Museum (Natural History) on 12 and 13 September, 1968." 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sponges
<br/><br/><label>Dewey Class. No.: </label>593  / .4