Krishnakumar, K. K. <br/><br/>
Sasthram jeevitham / 
by K. K. Krishnakumar 
 - Thiruvananthapuram :  Chintha Publishers,  2010. 
 - Balasahityam .
<br/><br/><br/>In Malayalam 
<br/><br/><label>Subjects--Index Terms: </label>Natural Science