Pothuval, P. P. K. <br/><br/>
Saasthram janananmakku / 
by P. P. K. Pothuval 
 - Thrissur :  Nalanda Publications,  2008. 
 - Nalanda children's literature series .
<br/><br/><br/>In Malayalam 
<br/><br/><label>Subjects--Index Terms: </label>Natural Science