India. Census of -. 1971 <br/><br/>
India, Language handbook on mother tongues in census   
By R. C. Nigam 
 - Delhi  Manager of Publication  1972 
 - lxi, 340p. 
 - Census Centenary monograph   no. 10 .
<br/><br/>  
<br/><br/><label>Dewey Class. No.: </label>312.54  / In39.IL