Malayattur Ramakrishnan <br/><br/>
AARAM VIRAL 

 - 7th Ed. 
 - Kottayam  D.C.Books, Kottayam   2007 
<br/><br/><label>ISBN: </label>8171303625 
<br/><br/><label>Dewey Class. No.: </label>894.812 308  / MAL/A