Helminths arthropods and Protozoa/ 
Soulby,E.J.L. 
 - 7th .ed 
 - New Delhi:  EWP,  2012. 
 - 809 
<br/><br/><label>ISBN: </label>9788176710893 
<br/><br/><label>Dewey Class. No.: </label>636.089696  / SOU/H