Croll, Neil A. <br/><br/>
Parasitism and other associations  Neil A. Croll. 

 - London  Pitman Medical  1973 
 - vi, 98p., illus. 
<br/><br/><label>ISBN: </label>0-273000594. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Viruses.
<br/><br/><label>Dewey Class. No.: </label>576.6,  / C74P