THOMAS, P.E. <br/><br/>
VISHA VAIDYAM 

 - Kottayam  D.C.Books, Kottayam   1993 
<br/><br/><label>ISBN: </label>81 7130 310 2 
<br/><br/><label>Dewey Class. No.: </label>894.812 4  / THO/VI