Sarvavijnanakosham (malayalam) - vol. 13 

 - Trivandrum  The state institute of encyclopaedic publication, Kerala.  2005 
 - 805p. : col. ill.  
<br/><br/> Malayalam encyclopaedia in 20 volumes. Director - M. R. Thamban. Donated by Prof. Haran c. Joshi. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedia Malayalam <br/>Malayalam encyclopaedia