K.H. Mann <br/><br/>
Leeches ( Hirudinea )  
 Their Structure, Physiology , Ecology and Embryology 

 - Oxford . London . New York . Paris  Pergamon Press  1961 
 - 201p. : ill , 24 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science <br/>1961
<br/><br/><label>Universal Decimal Class. No.: </label>2  / D32