Manikantan Nair, A. <br/><br/>
Bhoomikkadiyile vismayangal / 
by A. Manikantan Nair 
 - 4th ed. 
 - Thiruvananthapuram :  Melinda Books,  2014. 
<br/><br/><br/>In Malayalam 
<br/><br/><label>ISBN: </label>8188420611 
<br/><br/><label>Subjects--Index Terms: </label>Earth Geology