Census of India 1971 <br/><br/>
Kerala: administrative atlas 

 - Trivandrum  Director of Census Operations  1977 
 - 265+p. 
 - Census of India 1971. Series-9, Kerala. Part IX-A .
<br/><br/><label>Dewey Class. No.: </label>A81x54 In2/71/9/PT9A