Census of India, 1981 <br/><br/>
Households and household population by language mainly spoken in the household. Kerala. V. 10 

 - Kerala  Govt. Press           1981 
<br/><br/> paper 1 of 1987 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>Y:5.212sN81, M1.10-1