Gupthan Nair, S. <br/><br/>
Visvavijnanakosham / 
by S. Gupthan Nair 
 - Kottayam :  Sahitya Pravarthaka Co-operative Society,  1988. 
<br/><br/><br/>In Malayalam 
<br/><br/><label>Subjects--Index Terms: </label>Encyclopaedia Kerala Visavijnanakosham