Mann, Kenneth Henry <br/><br/>
Leeches (Hirudinea) their structure, physiology, ecology and embryology 

 - Oxford  Pergamon Press  1961 
 - 201p.  23cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Leeches
<br/><br/><label>LC Class. No.: </label>QL391.H6M33