Census of India, 1961 <br/><br/>
Sex ratio of the population of India   Monograph 10. India. V. 1    

 - India  Govt. Press           1961 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>Y:5.2sN61, L1.1-10