Venugopal Parameshwar Thonnakkal <br/><br/>
Maranathinte pookkal / 
by Venugopal Parameshwar Thonnakkal 
 - Thiruvananthapuram :  Prabhatham Publishing Company,  2007. 
<br/><br/><br/>In Malayalam 
<br/><br/><label>Subjects--Index Terms: </label>Biology Environmental Science