Census of India 1971 <br/><br/>
Kerala district census handbook, Trivandrum: census tables 

 - Trivandrum  Director of Census Operations  n.d. 
 - 180+p. 
 - Census of India 1971. Series-9, Kerala. Part X-C .
<br/><br/><label>Dewey Class. No.: </label>A81x54 In2/71/9/PT10C/TR