Enthukondu ? enthukondu ? enthukondu ? / 
Edited by M. Sivasankaran and P. K. Ravindran 
 - Thrissur :  Kerala Sasthra Sahithya Parishath,  2017.  2018. 
<br/><br/><br/>In Malayalam 
<br/><br/><label>ISBN: </label>9789383330072 
<br/><br/><label>Subjects--Index Terms: </label>General science