Census of India 1981 <br/><br/>
India: population by bilingualism (table c-8) 

 - Delhi  Controller of Publications  1991 
 - 219p. 
 - Census of India 1981. Series-1, India. Part IV-B (ii) .
<br/><br/><label>Dewey Class. No.: </label>A81x54 In2/81/1/Pt 4 B/2