Dhami, P S; Chopra, G; Srivastava, H N <br/><br/>
Pradeep's A Text book of Biology Vol 2 Class xi 

 - 30 
 - Jalandhar  Pradeep Publications  2015 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology
<br/><br/><label>Dewey Class. No.: </label>570