The biology of the turbellaria :  proceedings of the third International Symposium held in Diepenbeek, Belgium / 
 Hydrobiologia 
edited by Ernest R. Schockaert and Ian R. Ball 
 - The Hague :  Junk,  1981 
 - xiii, 300 p. :  ill. ;  27cm. 
 - Developments in hydrobiology ;  6 .
<br/><br/>Includes bibliographies and index 
<br/><br/><label>ISBN: </label>9061937574 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Turbellaria--Congresses