Visvavijnanakosham /  Vol.5,6,7 

 - Kottayam :  Sahitya Pravarthaka Co-operative Society,  1971. Kottayam :  Sahitya Pravarthaka Co-operative Society,  1989. Kottayam :  Sahitya Pravarthaka Co-operative Society,  1972. 
<br/><br/><br/>In Malayalam 
<br/><br/><label>Subjects--Index Terms: </label>Encyclopaedia Kerala Viswavijnanakosham Visva vijnanakosham Visvavijnana kosham