Census of India 1961 <br/><br/>
Inquiries into the spoken languages of India from early times to census of India 1901 (language monographs) 

 - Delhi  The Manager of Publications  1969 
 - 393+p. 
 - Census of India 1961. Volume 1, Monograph No.1. Part XI-C (i) .
<br/><br/><label>Dewey Class. No.: </label>A81x54 In2/61/1/PT11C/1